Thank u man

i have executed the command which u said and it shows that the file is existed.

I have no problem in creating an extended procedure and only problem i am getting is while executing it.

I don't why i am getting this error.

Cannot find the function xp_add1 in the library C:\Program Files\Microsoft SQL Server\MSSQL\Binn\add.dll. Reason: 127(The specified procedure could not be found.).