I\'m running Eclipse under a Windows 7, 64-bit installation on which I have administrator privileges.
Since I first installed Eclipse many months ago, I\'ve been able to
Another (simpler?) approach which worked for me is to simply give the group "Users" write permission on C:\Program Files (x86)\eclipse.
Now, this is a security consideration, but you're NOT granting access to the whole of C:\Program Files (x86), just the eclipse installation.