I require assistance.

So I'm pretty much computer-deficient, but disregarding this, I attempt to download and run 3D Custom Girl. Using the trial version of Alcohol 52%, I mount the thing and so far as I know, I get it extracted properly, but when I go to run the program, it claims that d3dx9_32.dll is missing, and no go. I've tried to reinstall it a couple times but to no avail. It seems like something that should be included with the ISO file, so I'm wondering if the file itself is broken, and if that is the case, where can I find a working one? I guess I'll keep posting so that this thread isn't a waste of space. Thanks for your help.