my wordpress site do not open!!

I received this message:

( ! ) Warning: require_once(C:\wamp\www/wp-load.php) [function.require-once]: failed to open stream: No such file or directory in C:\wamp\www\wordpress\admin.php on line 30
Call Stack
# Time Memory Function Location
1 0.0177 405448 {main}( ) ..\index.php:0
2 0.0499 498120 require_once( ‘C:\wamp\www\wordpress\admin.php’ ) ..\index.php:10

( ! ) Fatal error: require_once() [function.require]: Failed opening required ‘C:\wamp\www/wp-load.php’ (include_path=’.;C:\php\pear’) in C:\wamp\www\wordpress\admin.php on line 30
Call Stack
# Time Memory Function Location
1 0.0177 405448 {main}( ) ..\index.php:0
2 0.0499 498120 require_once( ‘C:\wamp\www\wordpress\admin.php’ ) ..\index.php:10

What can I do? The site is still localhost only.