News from NiteStalker:

I made it as simple as possible to change your prefered Contact Manager, my friend uses iContact, which seems quite popular here. As downloaded, the script is setup for iContact, but to change it all you have to do is edit the first 2 lines with a text editor.

Run the script and your Softkeys, and Links, all call up iContact, run again and it switches back to Office (Outlook) Mobile!

http://forum.xda-developers.com/showthread.php?t=387264