I took the test and the hardware part was easy but the software part was a little more difficult. I have an old book that I used for studying (not a good idea) and I was shocked to find questions about the Athlon processor and Windows 2000 on the test. It's no matter though, I spend enough time fooling with computers so even though my book didn't cover everything I already had the knowledge necessary to pass the test.
The real kicker is after I got my certification I threw it down on my resume hoping that it would help my chances in finding a job and the very first interview I had afterwards the lady asked me "What's this A+ certification you have?". It's one thing if you're in HR and you know nothing about computers, but this lady was the Help Desk supervisor. I think my jaw must have hit the floor when she asked me that question.
Anyway, just remember to study up on the Win2k stuff and have a basic understanding of network connectivity and you should be fine on the software test. The hardware test had some questions on laser printers, identifying various computer parts, and some "history" questions (like what generation was the Athlon processor: K5, K6, K7, K8). If you've been fooling with computers for a couple years and regularly reading anandtech or other "geek" sites you should ace the hardware test.