Windows – launch a Windows exe with a simulated reduced amount of RAM

I have an older application that crashes on launch on a Windows 7-64 bit machine. The root cause, according to the internets, is apparently I have too much memory and the app has some bug when it sees more than 4 (3.5) GB of RAM.

Can I launch the exe with command line arguments telling the app I have less memory? Or create a launcher process with restricted memory? Anything from command line, batch scripts, to win32 code is fair game for me.

I realize it's a long shot, but I welcome any suggestions, thanks.