After visiting the online version of your email, try deleting all the old messages. Once that's done, change the settings like this.
1. On the Tools menu, click E-mail Accounts.
2. Click View or change existing e-mail accounts, and then click Next.
3. Select your ISP account, and then click Change.
4. Click More Settings.
5. Click the Advanced tab, and under Delivery, select the Leave a copy of messages on the server check box.
Hope this helps.
My outlook 2002 keeps downloading the same old messages (1200) over and over. It doesn't download my new emails. Have office XP Pro.