dnschanger infection?

And when hjt is started I get immediate flag that says some thing like....

system denied write access to host files, my need to be fixed manually

Try any of these here or here.
Disable any script blocker, and then double click dds.scr to run the tool.

Dan, After my last post I continued to get host errors an then dhcp stopped working I lost all availability to contact you
so I had no choice but to back up what I could and do a clean install of vista. I thank you for your time and effort
I think all is well now.

Thanks for letting me know.
Good luck

As your problems appear to have been resolved,