How we can remove worm virus?

[vasim0101]

I have a  windows XP OS.
There are viruses in my system. I have Scaned my system and it's indicate that it those are worm viruses. I tried to remove viruses Using Quick Heal, Nortan, Avg, Trend Micro antiviruses but it did not remove so guide me how can i remove worm viruses.
and also main problem is there, when i trying to open C: its display one window named Open with, we have to choose proper program to open C:

[Deerpark]

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