Yesterday I took and aced the A+ hardware exam, today I took and passed (certainly didn't ace, too many NT4 questions) the OS exam. I'm A+ Certified!!!!! It's my first one.
The hardware was easy, OS was hard, mainly because my study materials had little on NT. It's an adaptive test, the hardware one took me about 10 -15 minutes. You may wan to wait a bit, they're changing the tests at the end of the third quarter or start of the fourth. www.comptia.org has a pretty good overview. PM me if you need more info.