How do you do that? and if I download kitchen to do the one step root, do I need to still download the sdk to install custom roms?
Well, no, you just load them on your SD card, boot into recovery and wipe, then flash
Mount phone to computer
Drag and drop .zip file to sd card
Power off phone
Hold down vol down and hit power
backup restore- do a backup of what you currently have
back to main menu
wipe data/factory restore, dalvik cache, and SD:EXT
Back to main menu
Flash Zip from SD
If your rom isn't there, you either extracted it (no longer in a .zip file) or you don't have it in the root file of the sd card
Here what you can do, since you can't boot up your phone now:
Back to menu
USB-MS Toggle (phone will mount)
Drag and drop .zip or find what folder it was it and cut/paste into root folder (so its not in any other folder)
press home to unmount
back to menu
flash .zip from sd (you should see it now).