Thanks. I will have a look at that. I can't at the moment I am doing a full reformat of my possible XP boot disk. I had forgotten how long these things took.
I feel sure I tried to install OFP on Win 7, I will try that again. If you had no problem with Win 7 (64bit) then I would not expect my hardware to be a problem, though it is a Mac.
The Arma:Cold War Assault looks interesting, especially since there is only one patch from 1.xx to 1.99. If I remember correctly 1.96 could only be installed after doing an earlier upgrade. But it is a long time ago now. So I may be remembering incorrectly.
Well I found a workaround on the internet that showed how to install a bootable Windows XP disk in an Mac Pro using its latest OS that does not support 32bit applications. I spent the best part of half a day doing that, then I thought I would give Windows 7 another chance as you said it worked for you. When installing OFP I kept getting error messages of the type - Insufficient memory to run the game. Previously I took these messages seriously. This time I ignored them and it all now seems to be working fine. One slight puzzle though, I installed CWC then Resistance then upgraded to 1.96. In years gone by that would enable me to run the game without putting any disks in the slot. Now I need to have the resistance disk in for it to work. Not a problem just a puzzle.
Many thanks. Not sure what to do with my XP disk now though!