Does anyone know that where have the most mssql extended procedures for download?

I have a extended procedure for sending email by smtp already.

Are there anywheres can be downloaded the rest?
e.g. copy, move, detect, and delete some files and directories in harddisk
access Active directories
read and write .ini files
etc......I suggest you search 'Books Online', the help files for MS Sql Server.|||I just know C# & VB only, and i don't know C/C++.

those are useless.