This batch will tell you where backups will go by default. It works on SQL 2000 and SQL 2008 for me:

[font="Courier New"]declare @data nvarchar(512);

exec master.dbo.xp_instance_regread

N'HKEY_LOCAL_MACHINE',

N'Software\Microsoft\MSSQLServer\MSSQLServer',

N'BackupDirectory',

@data OUTPUT;

print (@data);

[/font]

- Dan