Not sure what happened there, I meant to say, then you are not using
Portal Server. Could it be WSS or SharePoint 2001? If you are using
SharePoint 2001, then I have no idea how to help you. I never used that
product. However, if it is WSS, then you should still have at least two
db's (config and content).
You would set the path to your sql db files, so I am not sure where you
put them but you could check where the existing one is by right clicking
on the database in sql enterprise manager and checking the properties.
You should have a data and log file tab. You could also check the
defaul Microsoft location, which si c:\program files\microsof
sql\mssql\80\data (I think.........not in front of a server right now).