Do you have a bunch of .exe files in the folder?
C:\Windows\Software Distribution\Download\
Lets recap. The popups are coming when using IE and yahoo messanger but not with FireFox?
Yes, there are a lot of exe.files . How can you look at them? The windows are popping even without me opening any browsers. I only use Firefox and the pop ups appear to be opening IE. Doesn't matter whether I have Yahoo Messenger or MSN messenger on. I have not used them since yesterday or the day before.
Open the folder> (full Screen) hold down the CTRL key with the Print Screen Key> release those>
click Start> All Programs> Accessories> Paint, with Paint open > select Edit> Paste. That should show the folder with all the files.
Select File Save As and save it. See it you can attach it to your post here.