I got the xcom pack off direct 2 drive mostly for the first 3 ttles which run great in dos box. Interceptor crashed every few minutes, The graphics settings had to be set to software and there was no music on the stratagy side. Enforcer no music at all except in cut scenes.
I know only buy classic games off gog if there not on gog ill wait til they do.

Yep, that's the laptop issue allright. It's a known issue. As I understand it, it's caused by a special laptop power saving function that messes with the clock cycles somehow. Curiously enough, the first Hitman game is the only one I know of that suffers from the problem.
However, alternative causes and solutions have also been outlined. Maybe you can find some help here.

I could swear I turned power management stuff off... shall have to have a go when I fix my laptop up. Cheers man

It's just a matter of time...
*twiddles thumbs*

They also have no regional restrictions on Gamersgate or Steam, so it's strictly a Impulse thing.

Try RMCLOCK http://cpu.rightmark.org/download.shtml
Should get rid of any throttling.