Control Your PC using Nokia6230/SonyEricsson(Various)
Just checking this out thought you guys wouldnt mind havin a gander...
http://www.lim.com.au/PuppetMaster/
EDIT: Been playing with this for the last half hour. VERY VERY impressed. This is gadgetry at its best. You can control Winamp, iTunes (skip track, fast ffw/rwd, track appears on fone screen) general mouse movement (desktop appears on fone screen), reboot/restart windows, browse files on PC amongst others.
Using the trial version it cuts off after a certain amount of commands but you can just reconnect.
All instuctions are on the posted site... check it out.