Thats easier said than done. It all depends on if you're a quick learner. Leopard is fairly easy, however Snow involves manual DSDT creating/editing/patching, to get it working 100% with everything, audio video, networking, graphics to use Open CL etc.
It took me around a month to get it fully optimized with speedstep etc. Works like any other Macintosh now, enjoying it atm.
Start at insanelymac, it takes TIME to figure things out, be patient and keep trying.
Its not as simple as 1) Click here, 2) now Click there guide. You have to figure it out by yourself, others can only guide you.
Goodluck.