pmonett
I understand what you're saying, but...in IE, most anything that shows in your URL drop down will be found at HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TypedURLs, where you can edit items out individually, as this is for what the poster is really angling.
However, this is probably a moot point, as Mozilla is a different beast. The best way to test would be do a FIND within regedit on the URL in question and see if any hits point one in the right direction.
"'Tis an ill wind that blows no minds." - Malaclypse the Younger