The 8330 is a CDMA device. It cannot be "unlocked". And it will not work on a GSM network such as AT&T.
Also, the lack of the Personal Email option is indicative of the BLACKBERRY Data Plan not being properly set up with the carrier.
Also, there's no such thing as a BlackBerry that's only "partially unlocked" so that's not the issue.
So, verify the model number of the device.
If it's actually an 8330 and you are actually on AT&T, then you need to get a different device.
If it's something other than an 8330, call AT&T and have them set up the proper data plan to get the email setup option.