PCI Express 2.0 x16
2 (x16, x4)
Yup, it can handle CrossFire (according to reviews...meaning tested), saw no remarks about SLI but since you're going ATI/AMD that won't be an issue
Humans are the only creatures that won't live up to the their potential. Give everything your all. When you die, die on E.
So I ask you, what do you intend to do now?