Fireworks CSS exporting question....

Okay,

I have a site layout that i've made in fireworks with button rollovers, but i'm wanting to export it using CSS. If i do, it will only allow me to export the current state, so my rollovers wont work?? Is there way to make this work? I feel like i know it, but i cant wrap my head around it just yet. I would appreciate any tips, and if someone can point me in the right direction for using this feature that would be great. I've looked all over youtube and can't find any video tutorials.

thanks for anyone who can help!