I encountered the exact same problem with regards to
google and other search engines no working. This is how I
solved it and it should work for everyone.
-Click Start and then search.
-In the all or part of a word box type 'hosts'
-When the search has identified these, there will most
likely be one which is in the c:/windowshelp file or
something which includes windowshelp
-Open this via notepad (right click and select notepad)
-Then, check and this should reveal various web page
addresses such as google, lycos, etc.,
-If this is the case, DELETE this entire file as it was
put there by Qhost and hosts should never be in the help
file
-After this, reboot your PC and all should be well with
all the search engines.
I sincerely hope that this works as it was an infuriating
problem.
The Doc.