Kevin,
Yup, in the same boat.. The one thing of note that is a little misleading is in windows 2003 it's caleld MSCS, but in windows 2008 it's called failover clustering. The doc says that in windows 2008 MSCS isn't support.. Just threw me for a few minutes..
As there isn't much documentation on this, im wondering how widely used this is...
As for SAN disks, ditto, i think we can use any vendors