Nightmare trying to log in to dbattach

Hi,
I have just taken over a new school and have a new server which I need to use for Sims and FMS.

Normally when I move Sims and FMS to a new server I use dbattach to export the databases and then to also import on the new server. Problem is the old tech has left me a sa username and password that does not work. I get the error ' login failed for user sa'

I can access the sql studio and have managed to do a backup (BAK) of the databases.

am I able to move the databases to the new server using some other methode? I have seen posts saying its better to use dbattach as it keeps the users intact.

This is not a good situation, I don't like it when my standard method fails and I have to go down an unknown path, also I set tonight aside to do this.

Thanks for any advice

maybe some of this will work, assuming it is SQL2008 (which is a SIMS pre-requisite)

SQL SERVER – Reset sa Password « worth.Posting

Log on to SQL management, run a query on each database (ie sims and fms if you've got it) exec sims.db_p_transfer_login (or is it sims.db_p_transfer_logins?). Then under the left menu select security then select sa r-click change the password - make sure you store it somewhere secure so it doesn't happen again ;)