I started using an Adobe Air application today called “Balsamiq Mock Ups”.
Up to now I have been using Powerpoint 2007 which does an adequate job in layong out Mock-up screens for co-workers and clients.
This is a new type of software that is based on Adobe Flex, you need to install “Adobe Air” before you can install the program. Once you get it installed it takes a small bit of getting used to but nothing to unusual. The product feels a bit like a “beta” as its not terribly sophisticated in terms of menus and options.
Anyhow, despite these drawbacks the concept behind the product is excellent and the speed at which you can make product mockups is very exciting. I bought the paid version for USD 79 within one day of starting to use the product, that speaks for itself.