Outlook 2003 unexpectly closes

I have been using Outlook 2003 on my Vista machine for about 6 months now with no problem. Outlook suddenly began showing an error message that states "Microsoft Outlook has encountered an error and needs to close" if you look under details it says that Outlook crashed. In order to use Outlook again I need to restart the computer. It happens randomly, it will work for a while, then the error message appears, only if I hit "New Mail" "Reply" or "Reply to All" . I have tried everything I can think of, can anyone help.

I'm getting the same message. I had synced my palm to my outlook and it worked for months; then back in february I was getting the same error you were. Well since I hadn't synced my email in two months, I decided to try Outlook again this week and it worked! So tonight I called up my VZW and got my wireless sync working and now Outlook won't work again! I do not know what is going on!