WampServer

Hi!
I have just installed WAMP5 1.7.3 . When I opened phpmyadmin, it gave me error -> "Cannot load mysql extension. Please check your PHP configuration. - Documentation" . Then I restarted my computer . After restarting computer, I again opened phpmyadmin. And again receieved same message -> "Cannot load mysql extension. Please check your PHP configuration. - Documentation" .

NOTE : Sqlite is also not opening and giving me error -> "The SQLite extension can't be loaded".
2- I have already WAMP5 1.7.3 uninstalled, restarted computer, reinstalled and then again restarted computer 3-4 times without any positive progress.

I am using wamp on WIN XP ,version 2002 , service pack 2 .

Can some one suggest me the soluion of my problem.

Thanks in advance