Seriously I do a nice long burnout to heat the tires up, step up to the line, get staged, and start feathering the gas around 6500-7000rpms and dump the clutch. The tires grab great and the clutch is still holding after 40 or so ET Street launches.........
If you go to my website you can see me doing it in two of the drag vids I have up there. I think if you search for Zhound you'll also find he has some good in-car launching vids.