I'm very sorry to say this but... your computer might be too new to run old software like this.
You can however, try replacing the RPG_RT exe with this one.[http:// http://mirv.s16.xrea.com/rpg2k/data/RPG_RT2000_151.zip http://mirv.s16.xrea.com/rpg2k/data/RPG_RT2000_151.zip]
Otherwise, I am afraid you might have to make a virtual machine and put the game in there. Once again, I'm very sorry.