Explanation:

Click on "Yes" rather than pressing Enter when the Windows User Account Control dialog box asks for permission, or use right mouse - Run as Administrator on the Unsetup Foxhound shortcut...

User Account Control

Do you want to allow the following program from an
unknown publisher to make changes to this computer?

If you see this ...

Error 1730. You must be an Administrator to remove this
application. To remove this application, you can logon as
an Administrator, or contact your technical support group for
assistance.

... click on OK, then try running Unsetup Foxhound again.