I have installed wamp server and copy my php file plus related folder in www folder and sql files in C:\wamp\bin\mysql\mysql5.0.51b\data\mysql folder in which files contain extension MYD, frm, MYI.
Than runing project after typing following address in internet explorer http://localhost/ it give username and password page than i give username and password it give following message "Error Could not select database".
Please send me a appropiate information about how can i run my php project on my local machine.

copying the database files doesn't work like that, each of your database has to be registered/stored in the mysql database. (there is a databe called 'mysql'). if you can export it using phpmyadmin or other mysql gui

yes, you will also need the information_schema database.

the best way it to export to sql format, and import using phpmyadmin, That will save u loads of stress.
mysql is not like ms acess that you copy around, especially if some DBs use innodb as storage engine.

op probably a pro now