MB: Abit IP35 Pro
CPU: Core 2 Quad Q6600
RAM: DDR2 8GB
VC: GeForce GTX 260 w/ 896MB RAM
SC: SoundBlaster Audigy 2 ZS
OS: Windows XP Pro x64 Edition
Game: Rayman
Video mode: OpenGL
Version: DOSBox 0.73

I'm not sure if this issue is restricted to Rayman only, or a general DOSBox issue, since most games run at resolutions that completely fill out the screen vertically (tried Mortal Kombat and Kyrandia 1, just to see, both filled the screen).

This issue is that when running Rayman, it uses a resolution that doesn't use the full height of the screen. This would be fine, if it wasn't for one thing - the image isn't centered, but instead "snapped" to the bottom of the screen.

I've tried changing the scalers in the config, and most scalers will center the image, but "normal2x" and "normal3x" (can't tell any difference between these 2, are they the same?) instead snaps it to the bottom of the screen. "advmame2x" also does the same thing.

I would prefer to use "normal2x", since I prefer my graphics unmodified. Is there any way to use "normal2x" and get it to center the image?
I know, this means there will be black bars, but I'd rather have two small black bars, one in the top and one in the bottom, than a single huge one in the top.

UPDATE:
Tried some different output modes as well. Apparently they also affect this.
Both "opengl" and "openglnb" fixes the image at the bottom, with a big black bar at the top.
"ddraw" and "overlay" does the same, but fixes the image way at the top instead, with the big black bar at the bottom.
"surface" does center the image vertically, but it also stretches the image horizontally, which makes everything look stretched and weird. Maybe this one runs completely in software, and therefore bypasses the video card's aspect correction?

UPDATE2:
I found that specifying a fixed resolution in "fullresolution" instead of "original" also causes the image to center.