Does RDP require XP Pro? This machine is running Pro, but my Celeron box is running XP Home. I'm hoping it is that straightforward, because my networking knowledge/ability is rather bare minimum.

I have of course overlooked the fact that my Celeron box has no network connectivity. I'm running a wireless network, and don't have a Wireless adapter available to hand, so I'd have to get that sorted.

I'll look into the alternatives mentioned in the mean time, thanks for the help.