Windows 7

[ddouglass]

Yes to install or re-install any MTU program you must be connected to the internet. This is because that is the only way for the program to register with MTU and allow you to install. Floppy disk and flash drive install method went out back with the earlier releases of version 3.
With version 4 even if you are going to uninstall from one computer and reinstall it on another you have to be connected, so the server can free up the old install to allow you to move it to another computer, without having to submit a ticket to MTU and wait several days for them to reset your registration. This makes it easier for you and less work for their support person.