The_J, Thanks for the warm welcome, I may be new here at the forum, but I started playing Civ more than 10 years ago and am still a fan.
Yes, I do use Windows 7. I rightclicked the designated folder and de-marked the "read only" box and confirmed the operation, a Windows pop-up says the administrator needs to confirm, as I am the admin (I use my own personal PC) and using the admin-account I grant myself permission. But when I right-click again on the folder, the box is marked again for "read only".
Any ideas?