Heya all, did this yesterday after seeing the excel chart on friday on the comparison between binomial and poisson distributions... download it if you want to play with it. (you have to change the n and p values manually, i don't know how to increase it by just pressing a button...)

here's the file: http://ejinguan.5gigs.com/05S7B/BinPosCompare.xls

have fun (wonder how much =))