PHP 5, mySQL and Win XP. I NEED HELP

I have made a instal of the latest mySQL and PHP 5 on my computer.
I have made the following changes to my php.ini file

extension=php_mysql.dll
extension_dir = "c:\php\"

and i have put the php_mysql. and libmysql.dll in c:\php\ and in c:\windows
to

Now i try this in my php-file
$con = mysql_connect("localhost:3306", "buddy", "bestbuddy");

I cant connect to mySQL. I dont know what is wrong. mySQL listen to port
3306. I have tried with my IP to. I get this warning
Warning: mysql_connect() [function.mysql-connect]: Too many open links (0)
in myfilename.php.


I hope for help
Oscar Andersson