Could anyone help me out with this?

[bluddy]

My dad changed the resolution on our gaming computer, making everything appear double as big, i wouldn't mind it that much if not for my inventory taking up 3/4 of my screen when i open it. So i deciden to change the game relosutions, unfortunately i made it to big and with it no more fullscreen, and now i only see the upper left corner of my screen, i can't even press on the button ok to change it back. Is there any way to reset this without the means of reinstalling? thanks in advance, Bluddy

[Sar]

Delete your WTF/savedvariables and cache folders, should reset it.