yeah i'd be sure its a hosts file redirection,
itll say something like
1.2.3.4 google.com
www.google.com
etc only the 1.2.3.4 will be different.
-- forget this bit
select this
file:///C:/windows/system32/drivers/etc/hosts
then when it asks, say select program from list
scroll down find notepad and click it, then press OK,
thatll edit the file, then save it
or

click this
file:///C:/windows/notepad.exe
then click this
file:///C:/windows/system32/drivers/etc/
and drag the hosts file onto notepad
hmm doesnt seem to work so well off ie..