question on anti virus

[Bailey_sufc]

hi guys i run
avg anti virus
ewido anti-spyware
and spy bot S&D

i use lime wire some times and on spy bot ive got a prob lem called fake msn beta no matter how many times i scan and fix problems it does not go

and

wen a virus is in avg virus vauult is it safe ?

and finaly is the anti viurs stuff im running any good or can u sudgest any better free software to run
cherz