>Ok, but I'm unsure as to what the 'SmyMachine\msdesp1' is in:
>
>"osql -SmyMachine\msdesp1 -E -ic:\temp\instpubs.sql"

I needed to specify the named instance MSDESP3 (oops, typoed in the original) running on the server MYMACHINE. If I hadn't passed in the -S flag, I would have gotten the default instance, which is a full install of SQL2K.