I recently built a computer for my dad to replace an aging Win. XP sp3 machine that I had built him years ago. It's a really nice little machine with the following relevant specs:

AMD A10 6790k APU  
2x4gb 2133 DDR3 SDRAM  
120GB Corsair Neutron SSD  
2TB WD Green drive  
Windows 8.1 home - sadly

So here my problem, I can't get ePSXe to work on it. This is a HUGE provlem. 

Now he really does like this new computer I've built him. But he likes Brigandine so much he's considering asking me to put the old one back together just for the purpose of playing Brigandine. I really don't want to do that or try to keep it running indefinitely.

Does ANYONE know of a way to get the ePSXe emulator or any other PS1 emulator up and running in Windows 8.1?