Don't know if this helps guys, but I've got a similar EX58-UD5 setup.

Win 7 wouldn't install the Intel drivers during setup for me either (off floppy)....however, I'm dual booting with Vista x64 and the drivers work for it.

I have a feeling those drivers taking in the Vista setup means I can get Win 7 to load and get the Matrix Manager to install (new one out for Win 7 by the way) so the system becomes stable, cause before I installed Matrix, it was BSOD'ing on sleep.

Now it won't come out of hibernation, but it will come out of sleep. I'm still getting disk errors show up in event log, but other than not hibernating it's completely stable.

Gonna go to 7232, apprarently 7100 and similar early RC builds have RAID issues.