Hard to port games to nds?

[bloodsource]

Hi
How hard is it to port a pc game to NDS?
I would be really cool if some good coder could port some old pc games like duke nukem 3d, blood, Z, hexen 2 and so on..

[mikeccc987]

I've only tied once and ill tell you, its extremely hard! Also you need the source code to port a game.