Other Help Topics :: Need help getting programs into custom livecd

1st off I followed the instrution on making a custome cd and add the programs I wanted in the extention folder and the cd would not boot period
So I am not sure if I understand extentons
but what I would like to do is have my sound card load automatic at boot time and have gimp fully installed when I boot into dsl
could someone help with the above and simple step by step instruction
Thank all you wonderful peiple

original here.