FAQ whit categories and subcategories associated

[LCLC78]

Hello,

I need make an FAQ that involves categories and subcategories. So, when someone shearch in FAQ about one doubt, are provided one set of suggestions that are related wiht the doubt. This process is repeated until no further information related with te doubt.

I need something of this kind:

http://www.coisas.com/contact_us,page,content_pages

Can someone point me in the right direction for this? help me please

Thanks

[cretaceous]

google ajax
it helps a lot if you store your data in a heirarchical categorised structure in the db