I know I kind of threw those numbers together but here is a spreadsheet I made that lets you change all the parameters and see a plot on a VRS chart.
The white blocks are for user input and everything else is calculated. It lets you enter wind velocity and flight velocity in 3 dimensional vector form. Also, air density, nose up attitude, gross weight and rotor diameter. All velocities are in feet/min but its easy to see knots by just moving the decimal a couple spots in your head. The plot is on the old chart out of the Army Field Manual.
It's kind of interesting to play with the numbers.
Let me know if anyone catches any errors in it.
http://dl.dropbox.com/u/19282077/VRS.xls