If it cannot find it. Try this to manually delete the worm. I hope this is the same worm here
1. Disable System Restore
If you are using Windows XP/ME disable system restore using the following
Start->Programs->Accessories->Windows Explorer
Right click on my computer and click Properties
Click the System Restore tab
Click the "Turn off System Restore" box te click apply. Then click yes on the following box that comes up.
2. Now you need to remove certain values from your Registry Editor
Start->Run-> Type in "regedit"
Now delete these values
HKEY_LOCAL_MACHINE\SOFTWARE\Windows\Current Version\Run
These 2 values will be here and delete them:
RavTimeXP
RavTimXP
After deleteing them go to this directory
HKEY_LOCAL_MACHINE\SOFTWARE\Windows\Current Version\Setup
RavTimXP
After that the virus should be removed run a full system scan and check
Then turn on system restore to do this follow the instructions to turn it off just un-check the "Turn off System Restore"