Victor Feinman I found it on some guy's site

Unable to edit hosts file

Are you getting the following error message when you try to edit the hosts file?

"Cannot create the C:\WINDOWS\system32\drivers\etc\hosts file. Make sure that the path and filename are correct."

If your computer is running Webroot. Open the Webroot client, select the "hosts" file under the Smart Shields node, and uncheck "hosts" File Shield.

Problem solved.