After nearly (actually?) a year Global SAN have released 4.1 beta of their free iSCSI initiator for Mac OS X.
Critically this brings 64bit support, allowing the use of the 64bit Snow Leopard kernel and iSCSI at the same time.
It can be downloaded from here
Forums are here.
I’ll post an update if I have any issues.
UPDATE: . . . → Read More: 64bit Global SAN iSCSI initiator now available