you don't deserve an A+ cert if you can't even remember its by compTIA.
and...
Required exams: CompTIA A+ Essentials, CompTIA A+ Practical Application
Number of questions: 100 for each exam
Length of test: 90 minutes each
Passing score: 675 for CompTIA A+ Essentials, 700 for CompTIA A+ Practical Application on a scale of 100-900
Why not ask compTIA about the 3-year part?
http://www.comptia.org/certifications/listed/renewal.aspx
CompTIA will not require recertification for any current holders of CompTIA A+, CompTIA Network+ or CompTIA Security+ certification. You are not required to retest to maintain your valid CompTIA certification. Regardless of when you became certified in CompTIA A+, CompTIA Network+ or CompTIA Security+, you are certified for life.
For candidates currently preparing to sit for a CompTIA A+, CompTIA Network+ or CompTIA Security+ exam, if you pass an exam and become certified by December 31, 2010, you too will have a lifetime certification with no requirements for recertification or retesting.
Effective January 1, 2011, all new CompTIA A+, CompTIA Network+ or CompTIA Security+ certifications will be valid for three years from the date the candidate is certified. After three years, the certification must be renewed. This can be done by passing the most current exam for a respective certification or by participating in CompTIA’s upcoming new continuing education program, which will allow individuals to keep their skills current and their certification up to date without retesting.