Knew this was a common problem, so I did a search on Google. Here's an answer that pretty much sums it up:
"Well one thing is for sure... your problem is Directx 9... gtg will crash running directx 9... I assumed you new that when I left the previous answer... my bad. Now I know many systems that dont run directx 9 and it still crashes to the desktop, but in this case I would say that is your problem... you can find a directx 9 uninstaller by going to my site
www.bigboz.cjb.net and then clicking on SuitII and the Courses
that does not mean it will resolve the problem though if you have one of those systems that just crashes with gtg and xp... I am a computer tech and have 5 systems running xp and 3 systems crash when playing gtg... can't seem to narrow down the issue any further... thats why I suggested you dual boot the system, gtg run better in 98 anyway.
let me know what you decide and how it goes.
BigBoz"
It's not much of an answer, but it's as good as anyone's ever been able to figure out.