A rather tricky question for the scientifically minded

[blackknight]

Hi guys and gals, hope everything is going well, I got my PPL in august last year and after saving up some more money between applying for sponsorships i am doing some constructive flying time, ie navigation, however i find it to be a bit of a pain when i am planning my flights as i have to do them in a rush due to time constraints etc... I was thinking of investing in a little flying computer but already have a pocket pc running windows and more importantly Excel 2000, I want to know if anyonme knows of a formula that can work our:
DRIFT,HDG(True),G/S, from inputting the variables of W/V and CRS!

I can already convert to hdg(m) and HDG(c)
and do all the distance/time equations, i just need a little help with the more complex ones

Thanks

Blackknight