Update Jan 2013 This is now my preferred method of invoicing. Update August 15th: How to get the free basic version of Express Invoice working ( Easy after all! ) : Download the newest version of Express Invoice ( at this time it is 3.25 ) .. and install. When the trial period is over after 14 days it will ask that you buy the software or exit the software. To continue using Express Invoice follow these steps in Windows Vista ( sorry no mac or xp instructions but they are likely similar ) : In your control panel open “Add and Remove Programs” Double click on Express Invoice Select the “downgrade to free basic version” and click next. Click [...]