trojan horse downloaders

[blackadder]

AVG has informed me that my daughters computer has just found this:
trojan horse downloader msdvm.a
found in file c:\windows\system32\win32gb\exe

also this

trojan horse downloader skoob.a
found in file c:\windows\mscache.exe

i run AVG and it cleared them away but i can't find any info on the AVG site or norton about them anywhere.

any one heard of them

thanks

[reboot]

I found them on the NOD32 update site, but no info on them.

[Redo40]

Must be going around, I got a call from my son this morning, AVG had found a trojan downloader on his machine.