Well, I haven't seen anyone else post one, so what the hey -
I uploaded a spreadsheet that I use, and populated it with a few symbols so you can see how it works - at least, this is my interpretation of everything I gathered from these posts.
Feel free to comment - and please let me know if its blatently wrong! (so far, it hasn't produced any losers!)
mbg
p.s. - it contains macros that gets the data from Realtick - if you don't have Realtick, then just click "No" when the spreadsheet opens so that you don't get #REF's all over the place.