How to center the MainMenu ??

Hi Everyone!

I try to center the mainmenu but I do not succeed even by changing the css.
I tried the tags gkMenuWrap, gkMainMenu, gk-Menu without success...
I use the gk Extra Menu cuz it's fun ! but without center, that's a lil bit ugly on my website...

I'll become crazy i think ! I know how to center an <ul><li> menu but here, it doesn't work :O

Thx

Hi

Center ?! Isnt't already centered?
Can u show me your website?

Sry if i explain my problem wrong.
The menu is centered on the webpage by default (gk-menu tag).
But, i would to center the ul tag inside the menu.

That is the current sheme :
------------------------------------------------------------------------------
Welcome | My gallery | Contact
------------------------------------------------------------------------------

That is what i would like to do :
------------------------------------------------------------------------------
------------------Welcome | My gallery | Contact
------------------------------------------------------------------------------

Sry i can't give u the website url cuz of local developement and i'm just a trainee... (hope my sheme are clear)

Thx!