Psiloc Mobile Mouse is an application, which transforms your Windows Mobile Smartphone into a Bluetooth mouse for your PC. You don't need any additional software on your computer (since Mobile Mouse only requires Windows XP with Service Pack 2), your phone will be recognized as a mouse automatically.
When connected the red cross on your phone will turn into green check mark symbol. Sometimes you may see check mark symbol, but still not be able to use the application. Wait just a little longer then - your Bluetooth had already connected to phone, but is still being configured.
Psiloc Mobile Mouse is available from Handango for 9.95 EUR; a 10 days trial version is also available from there.
Cheers ~ Arne