well, I'll be....
After putting fc2 on it to find out the type of NIC, I reinstalled SME again, and it worked first time.
The only thing I did differently was to NOT specify a server for the local DNS. The first time, I had specified an ISP's DNS server there, since that is what I thought it was asking for; I had subsequently deleted that from the server administrator, but perhaps doing so didn't completely reverse the error?
Anyone care to give an option?
In any case; I'm sorry for the interruption, and I'm happy that it is now working, and to be able to move forward to setting it up as a file server etc etc.
Max.