If you've added a project to your combinator path using chbranch, you can remove it by going into the ~/Projects/combinator_paths directory and removing ProjectName.bch. Combinator should happily forget about that project. (Thank you JP. :D)
So, in regards to my previous post on setting up Twisted/Divmod development on a Windows machine, TwistedEmacs has now moved into the Twisted/trunk/emacs. Changing stuff around was pretty simple: edit the .emacs file so that it has
(load-file "C:\\Projects\\Twisted\\trunk\\emacs\\twisted-dev.el")(Again, your .emacs file is probably in C:\Documents and Settings\[username]\Application Data\)
Problem is that if you try to them remove the TwistedEmacs directory, Combinator gets unhappy. Hence the removing TwistedEmacs from combinator paths.