I use xp yours may be the same - right click MY COMPUTER select PROPERTIES. Click on the SYSTEM RESTORE tab and you will find a tick box to turn off system restore. When you turn off System Restore reboot and then run your av program to get rid of it. When you have done this don't forget to turn System Restore back on.
Thanks gents. No I'm not infected.My virus protection keeps it out but every day I get it trying to get in,once four times in a day.It's just a time wasting nuisance and I find it strange that it'ss there all the time. gell