Is appending an excel spreadsheet for a tutorial allowed?

[PeggyTee]

Hi

I'm working on a how-to tutorial that works out optimum, ceiling and floor prices for selling commodities online. There is an accompanying MS Excel spreadsheet that allows the user to input the required profit, and then the formulas work out best price. Should I just attach this as separate file (as it is an Excel document) along with the normal Word doc where the instructions are? Formatting guidelines do not allow tables, so I'm sticking to a list format in Word, which isn't very conducive to a tutorial that deals with numbers.

Thanks!

Peggy