Majority of spyware is detected as Trojan-gen including this one. avast! is now extending its detection field to spyware and joke “viruses” that makes you scared when you see deleting windows folder,but in fact they are just simulating this. Harmless but very annoying.
Most of such things can be safely deleted via Pop-up menu(delete at next boot if necessary option) or with Boot-Time scan (NT systems only).