Question : How do I use a second GB NIC to create multipathing to my ISCSI SAN

We have a windows 2003 server used for file sharing.   We have moved all data off to a Cybernetics SANDR device.    While perfomance is good, we've decided to "kick it up" by adding a second path to the storage array.   We've installed a dual-port intel GB adapter, but are not sure how to make the pieces work for multipath support.   We have not been able to find specific documentation on the subject.

Answer : How do I use a second GB NIC to create multipathing to my ISCSI SAN

MS initiator doesn't support teaming.
With 2 NICS, two switches and 2 ports on the SAN target you should go to the iSCSI initiator and login to all 4 paths to the LUN, then you can select Round Robin under load balancing policy, it doesn't always loa balance very well though as it's relying on equal traffic on each LUN, http://support.microsoft.com/kb/969748/en-us appplies.

There may be a DSM from Cybernetics, if not the MS DSM ought to work OK, don't forget to enable MPIO or you may see the same LUN 4 times.