kb, I second Chris's suggestion on the Palm--I use it to keep track of my schedule and contacts while in the field...AND, if you get one with wireless capabilities you can recieve e-mails in the field as well.
If you consider adopting a Palm, I would suggest also getting Beyond Contacts, a software program that synchronizes your Palm to match the format in Outlook.
And one last thing...I just finished implementing David Allen's workflow processing in Outlook as outlined in the $10 pdf file available on this site. It is definitely worth the money and effort!
Hope this helps.