PCMobilizr is a suite of
applications aiming to give you full control to your PC remotely from any
Windows Mobile or Blackberry terminal.
It renders your PC screen on your mobile screen with zooming features and
gives you the possibility to control a virtual mouse, with left-click and
right-click.
You can also send in regular text or press function keys (F1,
F2,...)
A great advantage of that service, as said on their website, is the ability
to access the service even if your computer is behind a corporate
proxy/firewall or behind a home router. 
