Whenever I try to install Fallout 1 on my computer, I'm prompted to install Directx 3a. I'm confident that the version of Directx I have on my computer is more recent than that, but I installed it anyway, only to find that Fallout didn't recognize I installed it, prompting me yet again to install Directx.

Has anyone else had this problem? I'm mounting an iso (legally) on Windows XP if it makes any difference.

I've had to use compatibility mode to install these games in the past. Could this have something to do with the problem?

To be honest, I'm not sure, but it might. How do I use compatibility mode if I'm mounting an iso?

Select "Properties->Compatibility" to either Win95 or 98, will do just fine I think.

However I would check your dxdiag to see if it's still running directx9 correctly, if I'm not mistaken that's the correct version for winxp.

*EDIT*


Use compatibility mode on falloutw.exe in game folder or the desktop shortcut by right clicking then select properties etc.