I called the local Apple store tonight to see if they had any Bluetooth USB adapters in stock. They did (sweet). So I cancelled the Mac/PC Bluetooth adapter I've had on order for over 5 weeks from CDW. While on the phone, I asked if the guy if he knew of a way to export my contacts from Outlook XP -> Entourage -> Address Book. He said I should check out www.macosxhints.com. So I did, and with a quick search on Outlook, whalla - I found Outport which allows you to export all your contacts as vCards. Then Apple's Address Book allows you to import vCards - so now all my contacts are synched up. Too bad Entourage doesn't appear to be as easy to synchronize. In fact, the only method seems to be exporting from Outlook as CSV and importing using a script from http://www.applescriptcentral.com/. I guess M$ doesn't want you to migrate anything from Outlook to Entourage - but what if I just want to "share?" I also found some good general hints on using Entourage.
Earlier today, I discovered Inbox Buddy from The FuzzyBlog!. I downloaded and installed in about 30 seconds - very cool - it's working for me so far. It's takes a little while (est. 15 minutes) to setup, but it's nice to see only the important e-mails at the top of your inbox, and all the spam get shoved to the bottom.
I did manage to stop by the Apple Store tonight and pick up the bluetooth usb adapter, and now I can iSynch my T68i with my Address book - I love it!