spyware help

I seem to have a rather nasty bit of spyware that is forever opening popups in firefox which resizes the window which is really pissing me off.

I have tried

1)hijack this and compaired the logs on http://hijackthis.de/ it found a few things which i corrected.

2)ran ad aware, ms antispyware beta and spware doctor. multiple times

3)went through the reg deleting a few item in
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and int he hkey_local_machine version.

4)deleted any temp folders i can find.

5) complete reinstall of firefox wiping all the folders it leaves behind as well.

what have i missed out because im still getting them.