U cant do it without a lot of research
u need source, linux, a lot of free space in ur hard drive etc.
u need to know how to code
and a lot of patience to test nd research
there are no simple steps for thht
otherwise someone cud have made it by now
Real Men(Contributors) Dont Need To Ask For Thanks. They will get it For a Job well Done
(Not using Nexus S. Just a build prop edit on my star.)