Thanks in advance for your help. :)
1. using xp pro
2. using microsoft sql server express 2005 (not the standard one)
3. everything is run fine
4. want to create a copy of an existing database so we can run some test.
5. I created a new one and tried to restore from the existing one, but it failed: msg: the backup set holds a backup of a database other than the existing 'RPDATA2' database. (microsoft.sqlserver.express.smo)
using microsoft sql server management studio express.
Thanks for your help