Several things: First, the way I understand it, FAM is a form of NFP, as is Creighton, Billings, Ovulation, etc. So to say that it's not NFP is untrue, but not all forms of NFP are FAM. Make sense?
Next, I firmly believe that any form of NFP is the COUPLES responsibility. So if that means you temp and chart, and he enters it into the computer, then so be it.
But, if you wanted ease of use, I'd suggest just getting the charts and doing it yourself. It seems sort of redundant otherwise.
Lastly, have you read TCOYF? There are paper charts in the back of that book. You could just copy a blank one, then you wouldn't have to buy the charts.
Or, you could use www.fertilityfriend.com.
Their charting is web based, so you can do it on any computer you have interent access to. Plus, they're free. I use them, but I'm planning on either switching to Ovusoft or becoming a paying (VIP) member at FF when we start TTC.
My routine is to wake up, temp, and when I'm surfing first thing in the morning, to add it to my chart then. Throughout the day, I check my CM, and then I chart the most fertile CM I've had that day on my chart. My df doesn't help at all, because we live two hours away from one another.
Hope that helps!