Crossfire setup help

[Metalface Mark]

Have a second 5850 coming tomorrow, having never crossfired before, is it just a case of plugging in the second 5850, and putting a crossfire bridge between them? Do i need to alter anything in my bios or catalyst panel etc?

 

[Metalface Mark]

Thanks, got them up and crossfire enabled when I first booted up, but after rebooted, I got a blue screen, so will try uninstalling, reinstalling the above!