Gunship! should be running on earlier to XP Win OS:
http://www.quantumhammer.com/simwarr...ipFAQ.html#HS1
Gunship 2000 is quite different fame from Gunship!. Gameplaywise some say Gunship2000 was superior but I have never tried. On the other hand, I can assure you though that Gunship! is a deeper simulation than it shows initialy.