I have been running Logos 3 on an (pretty ancient) PC laptop. I have just bought a Mac book pro and would like to buy Logos 4. If I click on the upgrade option on the website through my profile (which has been set up for Logos 3 PC) and order a Logos 4 base package upgrade DVD will I be able to install it? ie. Will I be sent a DVD that is Mac Compatible, or will in automatically recognise me as a PC user and send me a PC disk?