Forcing Custom Screen Resolution

[Spexx]

Pretty much what the title says, I'm running a 22" monitor but ragnarok doesnt support my screen's resolution (1680x1050) does anyone know how to force ragnarok into displaying at a custom resolution? (No spam please) 

[shane3x]

Go into your RO folder and click the set-up button and you should be able to change it there.

[Spexx]

Go into your RO folder and click the set-up button and you should be able to change it there.

Mate I went there to check but it didnt show up thats why Im asking =___=;;
Anyways problem solved
Turns out there was something to do with assigning the right main monitor