Lightmapping

Hi-

I’m pretty new to blender, so sorry if this a FAQ / stupid question: Can you use blender to generate lightmaps for use in games?
I’ve been told that it might be possible but is very difficult and will give poor results.

So are there any tutorials or any docs on lightmapping in bledender? Or should I just not bother with it at all and go for an external tool?

Thanks for your help,

-markus