So here is what happened..
I installed everything correctly and the plane loads fine etc. The problem arises when in the CDU, when entering the flight plan i.e the / or the from/to entry eg. KBOS/KSFO, as soon as i enter it FS freezes and if i dont ALT+CTRL+DEL and terminate FS after aout 10 seconds the computer hangs up... any suggestions will be great! thanks so much guys!