Well my R3700 is finally here. I whacked Ubuntu 10.10 on it, spent some time tinkering and sorting out the wlan driver that causes it to hang on shutdown and a few other tweaks. put xbmc on and then spent a day trying to get the sound to work over hdmi - gave up and installed Win 7 Pro instead. Got that working well and then decided to use this tut to put XBMC on - with a few changes.

1- I used the iODD drive I bought recently to mount the xbmc live cd image and installed from that instead of a usb stick.
2 - I let the installer manage resizing the windows partition etc. so I now have my revo dual booting Win 7 and standalone xbmc.
3 - I couldn't install the xserver-xorg-dev - kept giving errors about some dependencies not being met - I ran
Code:
sudo apt-get update
and then everything else worked exactly as descibed in the tut

That's as far as I got before wifey wanted the telly back so I'll be doing more tweaks etc this week.

Many thanks for the guide DejaVu