Playing with Google Spreadsheets

Playing with Google Spreadsheets: http://spreadsheets.google.com/:

I've shared a spreadsheet with you - it is named: "DeLong All-Purpose Quadratic Equation Solver" Click on the following link to log into Google Spreadsheets and view the spreadsheet: http://spreadsheets.google.com/ccc?key=o15492383500274530193.8006390369701147059

I've shared a spreadsheet with you - it is named: "Black-Scholes Basics Spreadsheet (20060609)" Click on the following link to log into Google Spreadsheets and view the spreadsheet: http://spreadsheets.google.com/ccc?key=o15492383500274530193.6208879362082642290

Alas! Graphs don't work in Google Spreadsheets yet, which means it is not yet terribly useful for my purposes...