Almost all models of RS and OFA remotes can be programmed with adv codes (as long as they have numeric buttons).
You need to be able to find a device code first before you can use adv codes, so even though the cheaper OFA Access 4 ($8 at Walmart) can be used, it won't be any good for receivers, etc as it doesn't have receiver codes installed.
You would be better of with a C7 than the '94 in this case because the C7 has more device codes than the '94.
These questions and many more wil be answered on my web site.
Rob.
http://www.hifi-remote.com/