ok, i probably sound like a total retard, but i can't find the vsync option! i turned it on because i had 400 fps and didnt want tearing, but now that i turned it on i cant find it again! help!

If you're using the OpenGL driver, you need to enable vsync via your driver, not via the game, afaik. On Linux, both ATI and nVidia provide control panels that will let you enable and disable this sort of setting.

but i did enable from vo ... after i enabled the option disappeared ...

As roguelazer said, use your control panels for your video card, and crop the images next time.

EDIT: Also, only DirectX contains vsync via Video in VO, so if you had DirectX running then changed to OpenGL that is why vsync magically disappeared. And this is not a Suggestion if I recall correctly.