But i just did a google and I get the idea... From my googling it seems that you just need to make sure that you use a "508 compliant" Dokuwiki template. Then all your pages should automatically be compliant.

How you do that explicitly though I am not sure... Perhaps posting on the Dokuwiki user forums might yield better results? If you have any success, please feel free to come back and post your info. Someone else would no doubt find it useful!