Groupee is what was known as Infopop. There will be no run around. We just flat are not going to send a trial version for UBB.classic anymore. That's no run around there at all.
UBB.classic is no longer supported or developed. That 6.7.3 is still available in the Member area is only as a courtesy to people upgrading to the current 7.1 version.
All that said, if you had a gold license in 2003 you should be able to log right on into the Member Area right now and grab 6.7.3 full and not worry about a trial. You paid for 5 years, that takes you to 2008 if my math is right.
The only part that might slow you down here is if you've lost your password. You'll have to put in a ticket and get it sent to you. 6.7.3 will be there a while, it's not going anywhere. Dunno why you wouldn't rather have 7.1, but you can download either or both while you're in the Member Area.
Anyway, we don't even have the trial version to send you.