Oops! This link appears to be broken. ERROR!!!!!!!!

hi i'm new to elgg but whenever i tried to us it it shows me this error on the browser... i made it succesfully 2 da second step (system settings). after i hit save it shows dis error msg for this link - http://localhost/elgg-1.7.6/action/systemsettings/install


plz does any kno any solution for this?

i'm workin on windows7 and uing wamp.... does any 1 have any solution 2 this?