Thanks for confirming my thoughts. The 3.4.805 sup file I had didn't come with an updated version of Snap Assist, and the 3.1.603 installed on the unit didn't support updates.
After reading your msg last night, I went back to Adaptec's site for another look around. The only software they had available was 4.0.860 Full Install, but that required an 'entitlement' to download. I did find the 4.0.860 update in the 'ASK' area, so downloaded that, and ran the version of Snap Assist that came with it - it worked! I could access my server. So, I selected update, browsed to the 3.4.8.5 sup file and away it went. I'm now at 3.4.805, and am about to go hunting for ram and BIG hard drives.
Thanks again. I'm now going back to play some more...