I'm currently building a carPC and would like to intergrate my WM phone with it. I have found MyMobile, which is like a Bluetooth remote desktop style software which displays the WM screen on the PC and allows you control it that way, but I was wondering if anyone had come across anything better? Perhaps something with its on GUI that made it easy to make calls, send/read messages via the carPC touchscreen, and used the contacts and other data from the WM device? Does such software exist, or am i asking too much?

Check this out:
http://www.alibri.it/RRMobile/RRMobile%20Plugin.htm

Due to the lack of bluetooth functions (only very few AT-Commands are supported) you have to use a bluetooth enhancer plugin on your mobile, like "JETware Hands-free Extension for Windows Mobile phones" (which unfortunately only works for MS BT Stacks).