TiVo supports 3 different remote codes. They do this in case folks have more than one TiVo in the same room, so that each TiVo can be controlled individually. Most of the TiVo codes you'll run into are probably the default remote code #0. You can configure a TiVo to respond to remote code #1 or #2 instead (this is documented in the TiVo manual). As mentioned by Jeff, the Pronto NG section of Remote Central has TiVo codes. Chances are, most of them are the default remote code #0. I also have the codes for remote code #1 and #2 in case you need them (PM me with your email if you need them). My TiVo Series 3 works fine with my TSU9400 (although I am having trouble with its codes if I go through my RFX9600, as I mentioned here:
[Link: remotecentral.com] ).