I had to uninstall/re-install my program. How can I sync this computer to my main computer ?? Thanks for any help.

Sync ???

If you have an IMAP email account and have the same account configured on both computers email clients / programs, then they will automatically synchronize email etc.

If you have a pop email account you would have to enable the option in your pop account settings within Emclient on boths computers to (Leave a copy of messages on server) and specify how many days on the server to keep the mail so you can then get the same pop mail on both computers.

Best option is to have IMAP account if your mail server supports it.