Would it have been russs15's Galactic Trade Federation: http://homepage.ntlworld.com/russdawson/gtf/
The Star Wars Collectors Archive also has a list of home variations: http://theswca.com/index.php?action=disp_category&category_id=56
OT.com has a wiki which lists quite a bit: http://originaltrilogy.com/fan-edits/
What did the site look like?
Note: on searching through OT.com it's better to use a search engine, use "site:originaltrilogy.com _your query term_"