[ nextgen-gallery ] Creating Tables Problem

Please i have a serious problem with my nextgen-gallery:
When i activate the plugin a “window” or somethin’ appears in my admin panel (in every section of my Admin CP) and says: “NextGEN Gallery : Tables could not created, please check your database settings..” & of course no gallery could be created
Argh i don’t know what is the problem coz it doesn’t say! Help pls.. i have full access in my cPanel X (hosted in 3rd-party company).. :/
-Everything else seems to work absolutely fine in my blog!!