No, you don't have to download any programs to your computer to use UnitPrintsPRO. Your account is managed through your web browser.
We do recommend keeping your web browser up to date.
Before you begin, please ensure your computer meets requirements for UnitPrints. You should be using the latest version of a standards-based browser (Firefox 3+, Google Chrome 4+, Safari 3+, and Opera 10+ are all supported, on Windows, Mac OSX, or Ubuntu Linux).