I'm using a BB 7230 - Is there a way to access the data on my calander or address book while a call is in progress? I loved my old Kyocera 6035 because I could refer to my PIM during calls, but I can't seem to do that with the 7230.

Pressing the <ALT> key (the half moon on the lower left hand side) and the ESC key (the key below the scroll wheel) brings up the task manager; you can switch to another application that way.

Aha! Beautiful, sir - I much appreciate the solution.