cannot delete links folders on favorites menu (Resolved)

Can any one help please, first of all I am new to this.first time I have posted. I dont know where they came from but I now have seven unpleasant
folders on my favorites menu. I have tried to delete but after a few miutes they return. I have tried Adaware, Spybot, and shredders, but to no avail.
As I metioned, I am new to all this p.c. stuff and what some call a silver surfer. I am running on windows 98. many thanks if any one can help.

Hi, it sounds like you need to run Hijack this HijackThis.exe
You may have spyware running in the background that keeps re installing the folders.

Thanks Tassie, seems to have worked a treat.