There are a few options, but none of them are easy, and chances for data loss are high.
Please read this link and it's links, and this link about syncing with evolution.
As for the setup of the email on the blackberry it's self, there's not a lot this forum can help you with. Blackberry configurations are very varied. IT, Telco, and you all have options to enable and disable pretty much every feature on the phone. I know many IT departments that disable "email setup" so that users have to go though corporate to get their blackberries setup. I also know a few telco providers that disable it so that you have to go through their setup method (though I don't exactly know why).
There is also the question of BIS or BES. Most consumers use a free BIS provided by their telco provider.
I have found Crackberry Fourms to be quite helpful. You may try your blackberry support issues there.