I have ZA Extreme Security V. 8.0.400.020 and a recent spyware scan turned up Win32.Downloader.Small.afwj and Win32.Trojan.Dropper.VB.TR. I deleted both of them from the Qurantine as ZA said they were infections and didn't serve any useful purpose. However I still have an infection. It's not always active but when it is I can't really use my computer because it executes arbitrary key strokes which interferes with what I am typing. It also activates menus since some of the keystrokes represent hotkeys in the programs I use.
Since deleting these infections, ZA scans say my computer is clean - so now ZA doesn't seem to be able to find the infection.
I am running Vista Hoem Premium (64 bit) SP2, pre-installed on a notebook I just bought.
Can anyone help with this?

Operating System:Windows Vista Home Premium
Software Version:8.0
Product Name:ZoneAlarm Extreme Security