> The question is not can this be done, but does the EULA of the upgrade, like many others of this type, require the removal of VFP 6 from the machine?

From the EULA:
"7. UPGRADES. If the SOFTWARE PRODUCT is labeled as an upgrade, you must be properly licensed to use a product identified by Microsoft as being eligible for the upgrade in order to use the SOFTWARE PRODUCT. A SOFTWARE PRODUCT labeled as an upgrade replaces and/or supplements the product that formed the basis for your eligibility for the upgrade. You may use the resulting upgraded product only in accordance with the terms of this EULA. If the SOFTWARE PRODUCT is an upgrade of a component of a package of software programs that you licensed as a single product, the SOFTWARE PRODUCT may be used and transferred only as part of that single product package and may not be separated for use on more than one computer."

This is the only part of the EULA that mentions upgrades, and it says nothing about getting rid of the previous version. Ping Ken Levy if you want a more solid answer.