Hi.
The mistake I made was to only read the manual!!
Initially I'd manually selected the .mdf & .ldf files from the MSSQL data path for selection for backup.
The SQL server agent had been installed on the BE server.
This reported no errors, but only bytes of data had been backed up. (it's a new database with only about 90mb).
Solution... install client connectivity and management tools onto the BE server, from the MSSQL 2000 disk. As I understand it there are no licensing issues with just installing these two components.
These two components installed, I should then be able to browse my remote server, and see an SQL server attached to it. This was not visible initially.
Co-incidentally the BE server was rebooted.... this may have had an impact, but the next day I was able to browse to the remote server... an SQL server box was attached, and drilling down you can see the databases (presented in similar format to Ent. Manager. Select databases, tested, full backup. I've yet to test the restore, but the fact I'm backing up the correct amount of data gives me a lot of hope....
My major gripe with this is the poor documentation within the 9.1 manual, the lack of consistant documentation on-line (referencing SQL 7, etc), talking about intstalling SQL agent on the remote server (I don't think this can be done).
Anyway, sorry to ramble, hope this helps.
Cheers