Yeah Excel is really all you need, anything more is unneccisary IMO.
I've actually just finished getting all the '06 stats in my Excel spreadsheet and its just ready for me to input my '07 predictions in so I can rank them for next year. If anyone wants this spreadsheet so they can input there own '07 numbers just let me know and I can email it to ya. I use "fairly basic" formulas to quickly rank the players after you put in your '07 predictions. After my formulas rank the players I will then go in and change some of the orders based on "gut" feelings or whatever..... Anyway, I've been doing if for a few years now and I really like.
Other goodies in my spreadsheet are the players age (as of 6/1/07) and position eligibility (not quite finished with these yet) and a link to the ESPN players profile so you can quickly look them up online as well.
Anyway, good stuff!!!