The support+driver mini CD included with the drive is worthless.
FWIW, the drivers that come with USB or Firewire enclosures are usually for Windows '98, since it was not distributed with drivers for these interfaces. Decent documentation should explain this, or at least it should be made obvious from the CD's contents. That it isn't doesn't speak well for nGear.
For comparison, check out the CD that ships with
American Media Systems "Venus" enclosures. The web site is a little weird, being almost 100% Flash driven, but you can download the CD as a zip file through the Support > Downloads > Venus DS Series >CD ISO image drivers buttons. It expands into an ISO disk image that mounts with the name "我的光碟" but the contents are in English & free of the syntax errors typical of "budget" Far East productions. The CD even has a Mac OS folder with some items to support older Cypress chips with older Mac OS versions, but it would otherwise just be something to point nGear to as an example of support done right.
BTW, I own one of the Venus DS-3 Firewire/USB cases & can attest that it is plug & play with my G5 iMac. It supports booting via Firewire with PPC Macs but since they don't support USB booting & I don't have an Intel Mac, I don't know if it would boot your MacBook via USB connection. It isn't the cheapest case around but I think it is a good value, & one of the few with a truly quiet built-in fan. It is meant for 3.5" drives & I have no experience with the DS-2 model for notebook-sized drives, but the company seems a better bet than nGear, at the very least!