What problems did you have with my site?
It's unlikely that a universal remote will have the Adcom codes pre-loaded as the codes are not in most OFA remotes. If you don't want to bother learning how to use JP1 just to load this one code, I could pre-load the code into a remote for you.
You can chose from any of the JP1 remotes listed in my "for sale" thread.[Link: hifi-remote.com]
If you don't know how to order from me, all you have to do is send me the money via Paypal and mention in the notes section of the transaction which remote you are ordering and which code you want loaded.
Also, just FYI, the GTP500 and GTP500II use different codes.