/bandiphani/
had tried all, in my system
.
This means that You have tried all and failed what I suggested in Post No 17 and by others. ( including Format and reinstalled OS as suggested by @visnbm )
Now you say I am using USB cable.
1.Start/ RUN type cmd type ipconfig/all
Post Data here. ( copy /paste)
2. Confirm you have an ethernet card installed in your computer.
3. Reconfirm you cannot access YM through link Yahoo! Messenger for the Web
in IE or FF.
4. For Portforwarding in UT300R2U

https://broadband.forum/bsnl-broadband/29505-pls-help-me-port-forwardin-ut-300r2u-router/
 
Yahoo sign deals with MTNL and Idea in IndiaInternet media giant Yahoo has announced some new deals in the Asia Pacific market.These include a deal with Indian mobile operator Mahanagar Telephone Nigam Limited related to their Yahoo! oneSearch mobile service.The US based company has also entered into a strategic mobile advertising partnership with Idea Cellular. [...]

Yahoo sign deals with MTNL and Idea in India
 
Hi Please find ipconfig Microsoft Windows XP [Version 5.1.2600](C) Copyright 1985-2001 Microsoft Corp.Windows IP ConfigurationHost Name . . . . . . . . . . . . : phaneendraPrimary Dns Suffix . . . . . . . :Node Type . . . . . . . . . . . . : UnknownIP Routing Enabled. . . . . . . . : NoWINS Proxy Enabled. . . . . . . . : NoEthernet adapter Local Area Connection:Media State . . . . . . . . . . . : Media disconnectedDescription . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Ethernet NICPhysical Address. . . . . . . . . : 00-16-76-42-B7-BAEthernet adapter Local Area Connection 2:Connection-specific DNS Suffix . :Description . . . . . . . . . . . : Broadcom USB Remote NDIS DevicePhysical Address. . . . . . . . . : 00-1B-57-8F-DF-E7Dhcp Enabled. . . . . . . . . . . : YesAutoconfiguration Enabled . . . . : YesIP Address. . . . . . . . . . . . : 192.168.1.2Subnet Mask . . . . . . . . . . . : 255.255.255.0Default Gateway . . . . . . . . . : 192.168.1.1DHCP Server . . . . . . . . . . . : 192.168.1.1DNS Servers . . . . . . . . . . . : 192.168.1.1Lease Obtained. . . . . . . . . . : Wednesday, June 18, 2008 8:52:33 AMLease Expires . . . . . . . . . . : Thursday, June 19, 2008 8:52:33 AMPPP adapter BSNL:Connection-specific DNS Suffix . :Description . . . . . . . . . . . : WAN (PPP/SLIP) InterfacePhysical Address. . . . . . . . . : 00-53-45-00-00-00Dhcp Enabled. . . . . . . . . . . : NoIP Address. . . . . . . . . . . . : 117.192.226.160Subnet Mask . . . . . . . . . . . : 255.255.255.255Default Gateway . . . . . . . . . : 117.192.226.160DNS Servers . . . . . . . . . . . : 218.248.255.146218.248.255.139NetBIOS over Tcpip. . . . . . . . : DisabledC:\Documents and Settings\PHANISUSHEE>netstat -anActive ConnectionsProto Local Address Foreign Address StateTCP 0.0.0.0:25 0.0.0.0:0 LISTENINGTCP 0.0.0.0:80 0.0.0.0:0 LISTENINGTCP 0.0.0.0:135 0.0.0.0:0 LISTENINGTCP 0.0.0.0:443 0.0.0.0:0 LISTENINGTCP 0.0.0.0:445 0.0.0.0:0 LISTENINGTCP 0.0.0.0:1026 0.0.0.0:0 LISTENINGTCP 117.192.226.160:2548 59.163.89.98:3389 ESTABLISHEDTCP 117.192.226.160:2819 64.124.194.17:80 LAST_ACKTCP 117.192.226.160:2822 64.124.194.18:80 LAST_ACKTCP 117.192.226.160:2828 38.96.182.20:80 LAST_ACKTCP 117.192.226.160:2855 64.124.194.17:80 TIME_WAITTCP 117.192.226.160:2858 64.124.194.18:80 LAST_ACKTCP 117.192.226.160:2859 64.124.194.18:80 TIME_WAITTCP 117.192.226.160:2862 64.124.194.18:80 LAST_ACKTCP 117.192.226.160:2868 85.92.158.75:80 TIME_WAITTCP 117.192.226.160:2870 85.92.158.75:80 ESTABLISHEDTCP 117.192.226.160:2879 77.238.174.11:80 LAST_ACKTCP 117.192.226.160:2881 77.238.174.11:80 LAST_ACKTCP 117.192.226.160:2882 77.238.174.11:80 ESTABLISHEDTCP 117.192.226.160:2883 77.238.174.11:80 ESTABLISHEDTCP 127.0.0.1:1025 0.0.0.0:0 LISTENINGTCP 127.0.0.1:1032 0.0.0.0:0 LISTENINGTCP 127.0.0.1:1037 0.0.0.0:0 LISTENINGTCP 192.168.1.2:139 0.0.0.0:0 LISTENINGUDP 0.0.0.0:445 *:*UDP 0.0.0.0:500 *:*UDP 0.0.0.0:1040 *:*UDP 0.0.0.0:1146 *:*UDP 0.0.0.0:2549 *:*UDP 0.0.0.0:3456 *:*UDP 0.0.0.0:4500 *:*UDP 117.192.226.160:123 *:*UDP 117.192.226.160:1900 *:*UDP 127.0.0.1:123 *:*UDP 127.0.0.1:1027 *:*UDP 127.0.0.1:1042 *:*UDP 127.0.0.1:1900 *:*UDP 127.0.0.1:1992 *:*UDP 127.0.0.1:2534 *:*UDP 127.0.0.1:2605 *:*UDP 127.0.0.1:2751 *:*UDP 192.168.1.2:123 *:*UDP 192.168.1.2:137 *:*UDP 192.168.1.2:138 *:*UDP 192.168.1.2:1900 *:*
 
suggestion 1 :NetBIOS over Tcpip. . . . . . . . : Disabled
Change it to default.
Start/network/Lan/properties/ TCP/IP
Properties/ Advanced /WINS
Also subnet mask to 255.255.255.0
Question 1: Have you connected USB cable and LAN cable to SAME computer ?
Disconnect USB connection.
Question 2 :
Confirm you cannot access YM through link Yahoo! Messenger for the Webin IE or FF.
 
Yahoo offering email ids on ymail.com and rocketmail.com Internet media giant Yahoo is already one of the biggest providers of free webmail services worldwide. The company is now allowing web users to get emails on two more domains: @ymail.com and @rocketmail.com. This is a good opportunity for those users who still find it tough to find a free [...]

Yahoo offering email ids on ymail.com and rocketmail.com
 
Please find ipconfig/all


Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 [COLOR=#475e8c! important][COLOR=#475e8c! important]Microsoft [COLOR=#475e8c! important]Corp[/COLOR][/COLOR][/COLOR].
Windows IP Configuration
Host Name . . . . . . . . . . . . : phaneendra
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
[COLOR=#475e8c! important][COLOR=#475e8c! important]Ethernet [COLOR=#475e8c! important]adapter[/COLOR][/COLOR][/COLOR] Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Eth
ernet NIC
Physical Address. . . . . . . . . : 00-16-76-42-B7-BA
Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : [COLOR=#475e8c! important][COLOR=#475e8c! important]Broadcom[/COLOR][/COLOR] USB Remote NDIS Device
Physical Address. . . . . . . . . : 00-1B-57-8F-DF-E7
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
[COLOR=#475e8c! important][COLOR=#475e8c! important]IP [COLOR=#475e8c! important]Address[/COLOR][/COLOR][/COLOR]. . . . . . . . . . . . : 192.168.1.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS [COLOR=#475e8c! important][COLOR=#475e8c! important]Servers[/COLOR][/COLOR] . . . . . . . . . . . : 192.168.1.1
Lease Obtained. . . . . . . . . . : Wednesday, June 18, 2008 8:52:33 AM
Lease Expires . . . . . . . . . . : Thursday, June 19, 2008 8:52:33 AM
PPP adapter BSNL:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . :
 
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