Henrik, with the advice in this thread I was able to get ISE and E:D running under a standard user account in Win 7 64 bit. This just took a few minutes.
Thanks again. Is it OK if I link here from the E:D forums, or would you rather digest this thread into a FAQ and put it under your support section?
If I do the former, you might get a bit more traffic here, but the E:D gals and guys are a nice bunch of people. Until they start shouting out for longer jump ranges and more content ;-).