If you have RMXP on a Vista machine and you run it, you'd normally get an error and it'll crash.
Screenshot provided by Starrodkirby86
1. To get RMXP to work on your Vista, first browse to the folder where you have installed it. The default folder is C:\Program Files\Enterbrain\RPGXP
2. Right click the RPGXP icon and click properties. Go over to the compatibility tab, check the box for "Run this program in compatibility mode for:" and make sure it says Windows XP (Service Pack 2). Hit OK.
3. Now, right click on the RPGXP icon again and click, "Run as administrator".
4. A pop-up should appear in which it says that RPGXP.exe needs your permission to run. Allow it to run and then you should be able to activate the program. After activating it, you no longer need to run it as administrator.
Congratz! Now you can run RMXP on your Vista!
Now get workings on those amazin' games!!!