I have two computers, one laptop and one PC, and I would like to take advantage of the sale on the Vega 18 upgrade. How many computers does this cover? Can I use it on both my Windows 10 computers or do I need two upgrades? It has been a while since I purchased an upgrade so I do not remember. Thanks for the help! Bruce !TRIED TO GET INTO THE VEGAS FORUM BUT IT IS SHOWING SYSTEM FAILURE OVER AND OVER. CANNOT BUY IF I CANNOT GET ANSWERS. NEVER SAW A COMPANY SO HARD TO REACH TO MAKE A PURCHASE.