Problem solved!

It seemed I missesd some options in the control setup. Terrible sorry!  You can call me an idiot if you want.

After talking with the guy on the spacestation I'm being atacked by the spider creature (The first battle in the game) I choose my preferred ship and then start the battle. But the weapon keys doesn't respond! I can only fire the thrusters and move the ship around only avoiding getting shot. Not being able to fire back.

I've also tried configuring the keys in the edit controls option, but that doesn't seem to work either. I start the fight with some new keys for fireing the weapons but nothing happens.... 
 
The other controls seems to work fine, navigation, menus etc.

I'm running Windows 7 on an acer laptop.

Somebody know what to do?