Adding custom pages under categories links?

[gmailer]

Hello guys,

 

For some reason I need to add custome made pages of my store(made in CMS) to the top menu on my website where I have categories.

 

 

As you can see above I have category named "Pytania i odpowiedzi". Where can I make changes to any file, so in place of that category I can place link to custom page made in CMS - without any products?

 

I use following template: http://www.templatemonster.com/demo/35375.html

 

I was lookig in many files but nowhere I could find anything that would remind a place, where link to categires from top menu are stored(so I could replace one of them)