mame screen alignment

[wooodyii2]

Hello,
        I am using mame  .152s and I am having a problem centering my screen. It is off to the right and down on all roms and I cant find how to adjust it.
Any thoughts?

[Minwah]

I would say adjust your monitor!

[wooodyii2]

Nope, not really. Because my windows home page is fine, it's when I start mame that it goes off center. But I fixed it. Thanks everyone. I will let you know what I did. To start off with I am using a nvdia geforce 400 mmx I think. The program that came with it allowed me to rotate my screen. I should mention that I manually rotated my 4:3 lcd screen 90 deg because of I want to play schmups. But when I started mame, it started in landmark view instead of portrait. So then I went into mame ini and rotated it in the file. Now mame went into portrait view but was not centered. It was off to the right and down. So what I ended up doing was going back into the nvdia program and changed it back to the original landscpe mode and left the mame ini file unchanged. Now it's perfect but obviously windows is inlandscape view instead of portait but who cares because this pc is strictly for mame and I wont be using xp anyway.