It appears that I have a virus that infects my antivirus programs. All of my norton antirvirus programs and files have been notified as infected and thus quarantined.

I have looked up on the internet and am not sure what virus it is but it sounds like W32.Bugbear.B@mm. However downloading the removal tool always reads that this tool is infected and therefore I cannot open it (I get 0 Kb). So what can I do? The only file I have downloaded before this happened today was the norton antivirus LiveUpdate virus definitions.