What minimum version do I need for Windows 7?

I have for some years used Corel Draw Essential version 9 running in Win XP. Now when trying to install in Windows 7 installation fails. It says "You do not have administrator priviligies on this machine. Set up cannot continue".

I have not found a solution and wonder what minimum version of corel I need to run under win 7. I am happy with the features in corel Draw 9. I do not want to spend a lot of money. It is a must to be able to go on edit my old drawings from v 9 in the new version. Does anyone have a suggestion which version I should get to be able to go on creating new and maintaining old drawings in Win7?