Problem after reinstalling os x to macbook pro

Hi,

Hoping someone can help. I've got a big problem. Basically, I was having problems with my macbook pro and decided to reformat it and reinstall os x and boot it off my time machine back up from my MacPro.

The main problem I've had is that I couldn't find my original installation discs (the macbook pro was bought in April 2008), I used my friends OS X disc (from his computer which was about 2 years older) and it seemed to install ok until I realised that the sound is gone, airport is gone and all the keys have different shortcuts to their original ones.

Any help would be very much appreciated.

Nancy