I'm pretty sure you can do the upgrade, however I would look twice before leaping. I have had nothing but trouble with 10. I am running WinNT w/sp6. 10 crashes every time I try to export/import. It crashes whenever I try to open a file that hasn't been accessed recently, causing me to "end task" re-open corel program and then it will allow me to open the file! It crashes when scanning! I still keep 9 loaded and quite often use it to import/export and scan. I think with a thorough investigation you'll find that I'm not alone when I say "Corel 10 is the most unstable version yet" Good Luck!