CSS Horizontal Hover Menu: How to Center on Page

[spycat]

The title pretty much says it all.
I like the script, but the designated "display:inline" seems to make centering it on the page difficult (for me anyway).
I have tried enclosing the script within <div></div> tags that either instruct it to center horizontally via standard, or css code (text-align: center; and/or margin:auto> I can use padding, but it is inconsistant between browsers and screen resolutions.

Can anyone help>
I am ALMOST done with a project, and this is just about the last thing I need to fix.
You can see an example at:

http://www.rickshrum.com/goodwill/goodwheels.html

Here is the link to the css file:
http://www.rickshrum.com/goodwill/bottomMenu.css

There, I use it on both the menu beneath the van (center of page) and on the menu at the bottom.

Any help would be greatly appreciated

Rick

[spycat]

No one?
Nothing?