How to remove winik.sys

Hi Friends,

I have XP Home Edition and hv installed AVG a couple months back..
Evertime i scan my system , the AVG detects a "Trojan Horse Agent DX"
for the file winik.sys..

C:\WINDOWS\SYSTEM32\DRIVERS\WINIK.SYS

Even after several deletes this file still exists.. is this harmful
virus??.. will my system gets affected ??...Does'nt Fire Sentry system
guard the system against this virus???. How do i remove it permanently.

Thanks,
Gromer

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