Well, I would definitely try PDAPJ's 6.1 as he gives good instructions and he specifies it should fit the 2.05 BL. If it doesn't work, you can try PMing him and see if he will help you. Again, I'm not sure how active any1 is on this site anymore. The kitchen is pretty straightforward but it has changed alot and I would be of little/no help.
Oh and I was wrong about the onenote. You should be able to run on any Windows Mobile PPC:
http://office.microsoft.com/en-us/on...95622.aspx#BM1
Again, don't fret too much about not upgrading. WM5 is fine. It will be faster than WM6.X. Definitely use Skyfire as your browser:
http://www.skyfire.com/support/support-skyfire-1-5/