If you're using a laptop, the most stable are the adapters that go into your PC card slot. Matter of fact, if you have a newer card for a brown box system, it will be in one of these adapters. You can use that, or get one of these:

http://www.amazon.com/SanDisk-SDAD-38-A10-CF-Card-Adapter/dp/B00006B9QD/ref=sr_1_3?ie=UTF8&s=electronics&qid=1254000970&sr=1-3