SQL6.5 can't schedule recurring backup

[soozle]

I've just done a clean install of SQL6.5 (and updgraded to 6.5a), restored our databases (from a different server) and I'm trying to setup a daily backup task.

I can do an immediate backup but on filling in the 'schedule backup' dialog then pressing OK. I get the error message
'Error 2812:[SQL Server] Stored procedure 'msdb..sp_helptask' not found.'

I'm checking out the help files but though it might be faster to ask the expertshere.
TIA
Soozle

 

[soozle]

BOL suggested running INSTMSTR.SQL but I can't find that on the server and weirder I can't login to the server using ISQL_w or Enterprise manager at the server but both apps can login from my workstation.
I've installed a few times and never had this problem...
soozle