Just FYI, I checked the situation: As suspected, Vista home basic & home premium DON'T allow you to run RDP in host mode, so if you have either of those installed, that is your root problem.

Depending on your reason for wanting RDP,you may simply be able to run an alternative such as VNC to give remote access and forget about using RDP.

Like I said though, if RDP specifically is required, there are hacks out there that will get around this, you just need to find one that corresponds to your vista version & SP level.

"I have a friend" who's hacked both XP home and Win 7 home to allow RDP host in the past - pretty painless in both cases as long as you are happy to mess with the registry a bit & have a quick scan of any batch files you're asked to run to ensure they're kosher :-)