Envy of 2nd generation Ti having Combo drive option? Apple's combo drive upgrade doesn't fit 1st gen Ti due to the difference in ATA cable in 1st gen and 2nd gen Ti.
Good news, Taxan of Japan will be releasing a Combo drive option for 1st gen TiBook sometime in April.
OK, I know there's a lot of ways to do this, but I found this safest whenever I help my pals over the phone... tired of doing it again and again, I made a short movie, see here