How can I blur figures in an Excel spreadsheet ?

I want to show people a spreadsheet that I use at home for my own banking,
but I don't want them to see my own figures.

Is this possible ?

I do the same thing for demos using live client data - I use SnagIT for this from www.techsmith.com (free 30-day trial, or used to be). You can print output to SnagIt, and then 'blur' any part of the picture, with varying levels of blur, and save as a jpg or other formats.

Works really well.
Regards
Mike