as you said, it would not be possible to play dvd movies (no onboard mpeg decompression) but it should be able to (with the proper drivers) to read and access dvd-data. The other problem, is that there is no freaking room inside the first gen imacs. you might be able to pick up a powerbook dvd-rom drive, but it probably isn't IDE (i don't do powerbooks). curious on you sucess...