How to SCROG???

Okay i need help ive got a 30" x 18" x 18" (HxLxW) cabinet and a dual spectrum 300 actual watt CFL, and due to the limited space i have been told SCROG is the best method for me, so i need to know how to do this method so here are my questions has anybody got on pictures on how to wind the stems through the screen, how long do i veg for and do i top if so how many times?

Thanks :D

My cabinet is actually 30" x 24" x 24"

and the "Noob guide to basic growing" on this site....all the information is there