I'm also a proud Toshiba e755 owner. I bought it second hand on eBay just over 8 months ago now. So far I have been very pleased with its performance.
As gregmills mentionned, there are a few updates available. The MSN Messenger update must be installed to use the program. I can't help you much with DB managing software. Just keep looking around, and eventually it'll pop up somewhere. Every day I find new apps and new ways to use the PocketPC, its really quite amazing.
On another note, I just received my Bellagio leather case today. I'm in love

pclove: . It's definately the best case out there for the e755. I'll be writing a short review on the case soon and including a few pics as well
Cheers !