If you purchase the upgrade, you must remove previous versions from your PC. If you buy full version, then you can leave the previous versions.
There is also a question about installing runtime on a non-Windows PC. You should read the EULA carefully and/or consult an attorney on this one as it is not clear what it states.
>Hi Craig,
>
>Everything sounds great according to the new version, but what is the licensing policy with version 8?
>
>M
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer