Wirelessly posted (BB 8900: BlackBerry8900/4.6.1.101 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/301)
The mini-DP is made so that it does not have the 4 analog pins, and so you cannot use the dvi to vga adapter on the end of it. Way to go apple.
If you're looking to save some dough, pick up a mini5@ to dvi and miniDP to vga from monoprice.com; they make their own 3rd party adapters that are significantly cheaper. I think that both adapters from them cost the same as 1 from apple.
Cheers.