Extended Stored Procedure

Dear Mike
I've created this sp through Enterprise Manager. and when I execute
sp_addextendedProc it show me Error message:
Server: Msg 2714, Level 16, State 7, Procedure sp_addextendedproc, Line 26
There is already an object named 'xp_Session' in the database.Why would you execute sp_addextendedproc if you've already added it? You
only need to add the xp once.
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"mtgoli" <mtgoli@.discussions.microsoft.com> wrote in message
news:E42A61D7-41F7-490A-899E-EDAA6996256A@.microsoft.com...
> Dear Mike
> I've created this sp through Enterprise Manager. and when I execute
> sp_addextendedProc it show me Error message:
> Server: Msg 2714, Level 16, State 7, Procedure sp_addextendedproc, Line 26
> There is already an object named 'xp_Session' in the database.
>