Installing Zorin on multiple machines

Sorry if this is a lame question but I am a Linux newbie.

I intend to upgrade a computer lab that has 6 stand-alone desktops--older DELL machines running Windows XP.
I assume that I can order a single DVD (e.g. Zorin 8 Ultimate) and use it to perform the install for all 6 of the computers? In other words, no unique product ID is required for each individual install, right?

Thanks.

That is correct, but you are advised to try the Core one first to see if it will install correctly - if you want long-term support now, go for version 6 as it will last until 2017! You will only receive support for one machine if you purchase the physical disc (just as you would if you purchased a commercial version of Open SuSE)!