Backtesting investment strategy on VBA

I have an investment strategy I need backtested using two different methods, I can describe the methods mathematically to you, also I need some performance metrics to be computed and a quick excel interface allowing the user to select different strategies. I will pay 100 USD for the work done, It should take maximum 3 hours for any skilled VBA person. (I could code it in R in under however the individual wants it in Excel) I will own the copyright for all of the source code, and this project can not be disclosed until May 2012.