Member Rara Avis
As you said you discovered, Sharon, logging in will reset your most important cookies. The other way to do that is to edit your Profile (you don't have to actually change anything, just go into it and click on the Submit button). It's often not a bad idea, before doing either of those, to clear all your cookies first.
Once you've done that, come back here and click on this link: http://piptalk.com/main/Ultimate.cgi
Delete all of your other bookmarks to the forums and use ONLY that one. Most of the other links around here don't update your cookies (else we'd be changing your arrival time with every click). The trouble report you sent indicated you had "some" cookies set, so your browser "should" be okay. You just need to give it something it can work with.