upgrade fra EasyPHP 1.8 to 5.3.2i cannot connect to MYSQL

Earlier I have been running on a EasyPHP 1.8. Now I have installed EasyPHP 5.3.2i in another folder. Then I have created at database and restore the data from EasyPHP 1.8. I am using the exact programs, but got an error, Warning: mysql_connect() [function.mysql-connect]: [2002] Et forbindelsesforsøg mislykkedes, fordi den, der tilsluttede, i (trying to connect via tcp://localhost:3306) in ....

I have look in both FAQ and this forum, and tried a lot to get it to work, but I still get the error. Most of the aswers says change localhost to 127.0.0.1, mI still get the error. i am running windows Vista and explorer 8. Still when I start EasyPHP 1.8 it works ok.

Please help.

Regards Birte