some time ago at night ,surge or something came through sify lan cable and it burned the inbuild nic [intel 845 mobo],the cto refused to take any resbonsibility for it, because the pc was in extended warranty the mobo got replaced for some charges by the company.so is there any surge protector available in market in the range of 100 to 400 Rs that can protect pc for lan surge protection,,thx for any info.