possible trojen?

have just run boot time scan with avast and found the same virus in the following locations,
A0035 189.dll
win32:dialer-669 {TrJ}
C:\system volume information_ restore_ {46DE8921-1D39-44D2-A9E9-6411 9261F211} RP…

btwebcontrol.dll
C:\program files\ internet explorer\ BTO

I have stored them in the virus chest for now, what is best to do with these, can i delete them

Please follow the instructions on my website. (see my signature)
Click on one of the flags to select your prefered language there.

The only way to remove the one in “C:\system volume information_ restore_ {46DE8921-1D39-44D2-A9E9-6411 9261F211} RP…” is to disable system restore and reboot.

The c:\System Volume Information folder is a part of the system restore function and as such is protected by windows, the only way to clean infected _restore points is to disable system restore and reboot. This will clear ALL _restore points. Once you have disabled system restore, reboot, scan your PC again and if clear enable system restore.

Win XP-ME - How to disable System Restore