I've always just zipped up (7-zip or windows built in zipper) the ProventureInvoices folder in "C:\program files (x86)\" on a 64bit windows, or just "Program Files" in windows thats 32bit (95/98/XP). I've used this method to install this software on Windows 7/8/10 since the CD doesn't accept installing on a 64bit operating system. Although if you have large databases some email providers don't accept large attachments. In this instance, I've just used google drive to upload/download the files. It's as simple as unzipping to the Program Files folder (use x86 folder on 64bit windows) and you can launch EasyInv.exe from there.