MacBook Air running Windows using Bootcamp

I really want an MacBook Air but I need to run Simply Accounting (no, I can't choose another package) which is only Windows based. I've heard of a solution called Bootcamp. I need to understand how reliable and easy to use that is. I'm not extremely technical and need to simply have my solutions work when I need them too. I'm trying to determine if I can proceed with a MacBook or am going to have to settle for a PC (gasp). please share your experiences in using Bootcamp for this purpose,