I have a first generation DS, what do i need to get this going? i can't believe someone got hexen ported to the DS. has anyone done it with quake?

You need to get a flashcart such as the SuperCard - http://eng.supercard.cn

From there you just load up games onto the card. I don't have one myself but thats the card I've been looking to get.

I did a search on DS quake and looks like there isn't one yet but someone is working on it :D http://dsquake.blogspot.com

i just got dual hexen version .26 working on my ds but it won't stop jumping. does anybody else have this problem

try reconfiguring the keys, that might help