Create a custom palette?

[lawickirayp (Ray Lawicki)]

As a novice i need help in creating a palettebook that has specific button functions for statistical analysis. i would like to have a button for the following functions nPr, nCr , binomial pdf, binomial cdf , normalcdf, inverse normalcdf . i know that i can produce the values by using mathematica text but i do not want to always go through the math to produce the answer. for eg i would like a button to press for say evaluating the probability of a binomial dist. with specific parameters that i insert and the button produces the result. i tried using mathematica advice but was not able to do what i want. i would like to produce a paleete simlar to the ones that are already on mathematica but do not have much in the way of stats. help.