I work for a computer repair shop, and we see AV20xx ridiculously often... We burned a CD with Malwarebytes 1.41 and SysInternals Process Explorer, and that's all it really takes to disable it, allowing for full removal. Make sure you rename procexp.exe to iexplore.exe and then kill the virus process, launch Malwarebytes and nuke. After that, fix any internet connectivity problems, install a trial of Sunbelt Vipre, then scan with both until clean. After that, do a final pass with the free version of PrevxCSI and remove files manually until it comes up clean. Viola!