i wouldnt be suprised if Apple released another revision of this with some kind of optical drive, like they have on their other macbooks... I mean heck you dont even need a tray.
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Thinkpad T61 14.1 wide | WinXP Pro | Intel C2D T8300 2.4ghz CPU | 3GB 667 DDR2
AGN WiFi, BT, WWAN | 256mb NVS140 graphics | 160GB 7200RPM HDD