After removal O2K still wants CD!

Tried O2K. Had lots of little, but annoying problems. After attempts to fix, gave up & removed it. Ran the O2K eraser from MicroSoft. Fixed MSIE 5.5 missing fonts & Outlook mailbox problems caused by extraction, & re-loaded Office 97. Even now, when I spell check in Outlook Express, a pop-up window opens & asks for the O2K CD. I cancel & Word 97 does spell check. Is there any way, short of format C: to get rid of this thing’s hooks? It just won’t die!!! Talk about programs violatingALL of Microsoft’s rules!!! There is no uninstall (that works anyway!) Thanks.