Help! Problem with MySQL!

I have watched a youtube video saying to download this pack: Lbniese-Repack 2.9 and when i'm up to the part where i go into Lbniese-Repack 2.9/Server and then run the MySQL.bat cmd thing and i did it came up with this:
MYSQL IS RUNNING NOW!!!
Please dont close Window while MySQL is running
MySQL is trying to start
Please wait ...
MySQL is starting with mysql\bin\my.cnf (console)
Can't start server: Bind on TCP/IP port: Invalid argument
100706 17:35:57 [ERROR] Do you already have another mysqld server running on port: 3306 ?
100706 17:35:57 [ERROR] Aborting

100706 17:35:57 [Note] mysql\bin\mysqld: Shutdown complete

MySQL could not be started
Press any key to continue . . .

And then the vid said to download .Net Framework 4.0 and also download Microsoft Visual C++, but unfortunately it came up with the same thing PLEASE HELP ME!

If you have other repack already installed in your computer it will don't work

#Moved to Emulation

100706 17:35:57 [ERROR] Do you already have another mysqld server running on port: 3306 ?

Do you?

Blachex wrote:If you have other repack already installed in your computer it will don't work

#Moved to Emulation

i have watched the video everything was fine but when i conected with acount name admin and password admin the realmlist apeared Blizzlike and then i clicked on it and it just stays conected can u help me plss

Did you make sure you set your realmlist to 127.0.0.1 ? or localhost

Go into your "mysql" map and hit the mysql_uninstallservice.
Make sure to run it "as Administrator" if you have Vista/Windows 7.
Then start the Mysql.bat and it should work, i think