cubase LE4 guitar rig: no audio on recordings!?


Ive installed cubase le4 and guitar rig and ive set up the first track and recorded the guitar part but there is no sound on the playback. Anyone have the same problem or able to help? im sure it has something to do with the configuration or a programme i need to download but dont know where to start. on the manual it mentions about Asio audio software(?)

anyone who has experienced the same problem or knows the solution i would be so greatful to hear from