I've looked into the Apple adapter and there appears to be quite a few issues with it. I'd steer clar unless you can confirm 100% it works fine with your setup.
I can't believe these are so hard to get hold of![]()
thats cause they want you to spend over £400 on a new monitor
http://www.hardmac.com/news/2009/11/09/details-of-the-radeon-hd-5870-eyefinity-edition
Seen this, is it likely that this version (5870 Eyefinity Edition/6) will also need the active DP adaptor to run on 3 DVI monitors?