Info about Rockbox and all the documentation are on the Rockbox site...
http://www.rockbox.org/
The Rockbox installation instructions are here...
http://www.rockbox.org/twiki/bin/vie...RockboxInstall
I suggest getting the H300 "Experimental" build. Don't be put off by the name, its just called that might crash more often because it makes use of the very latest patches which haven't necessarially been tested for bugs as much- nearly everyone uses it
!
You can get the H300 "Experimental" build from here...
Experimental build by KOSH, Announce only! (NO DISCUSSION)
You can download ready-made WPSs here...
H3xx Rockbox 24bit Color WPS here. No Discussion (56K Warning)
...or if you feel daring you edit them/make your own from the info on this page...
http://www.rockbox.org/twiki/bin/view/Main/CustomWPS