I also use WordPerfect, Corel Draw, and Paint Shop Pro and am just passing 64. I've used them (and a lot of other stuff, professionally) on DOS, Windows 3,1, 98, XP, 7 and now 8. They work well on all of them. They are both faster and more secure on 7 than on XP, and faster and more secure on 8 than on 7. Once the OS is set up. the only real difference is where to find the icon to launch the program. XP , 7 and 8 have all been on the same hardware, a dual-core AMD Athlon X2 on an Asus motherboard with 3 gigs of RAM.