what 'strands' or variants?
What you need is the specific virus removal tool (VRT) - all good AV software developers offer free removals tools.
The quickest way to find what you need is by visiting the almighty G of SEs, type in JUST the bastards name and ... GO.
... or, below are some of my VRT bookmarks:
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Symantec's VRT page
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McAfee
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GriSoft
If you need further assistance, hit me up on ICQ (123029302) or
e-mail me
I provide support to our members, and I assist them with similar issues, everyday ? for whatever that is worth.