would be better NOT to use the sp_ prefix !

this is clear in BOL

[font="Courier New"]We strongly recommend that you not use the prefix sp_ in the procedure name. This prefix is used by SQL Server to designate system stored procedures.

We recommend that you do not create any stored procedures using sp_ as a prefix. SQL Server uses the sp_ prefix to designate system stored procedures. The name you choose may conflict with some future system procedure. If your application uses nonschema qualified name references and your own procedure name conflicts with a system procedure name, your application will break because the name binds to the system procedure, not your own.[/font]

regards,

Dick