Wirelessly posted (8700g: BlackBerry8700/4.2.1 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/100)
Welcome to the group, darwins!
If you haven't obtained or received the blackberry yet, let me advise that blackberry's are different. Different in a good way, in my opinion; but it depends on what you need. The blackberry has native PIM apps as well as available aftermarket products. But I expect it is different from what you think of and maybe you are used to when you say PDA.
Also, in case no one else has. Let me recommend http://blackberryfaq.com/index.php/Main_Page
. At the faq is a list of links to aftermarket software sources.