if you are using the hp 4520, i5 or i3 you will want to use "regular" iboot cd and install retail 10.6.3 SL. This will give you the native resolution of 1366x768x32@60, without changing the pbios in the script.However, I for the life of me cannot update. I always get an early restart or a kernel panic no matter what I do. Any help here??? any help at all? please.