PLEASE HELP!!!! Problem logging into site

[Donna]

I am having a problem with any site that requires me to
enter my username and password. Every time I click on
member login, or sign in, page comes up "Page cannot be
displayed"
I have tried everything I can think of, and even got rid
of spyware, etc... nothing seems to work!!! HELP!!
PLEASE!! Below is url that shows when page says it
cannot be displayed.

res://C:\WINDOWS\System32
\shdoclc.dll/dnserror.htm#https:// (followed by the
website name and miscellaneous numbers)

 

[Guest]

Try temporilary turning off your firewall, especially
Norton and then try logging in. If that works, add the
site to the firewall.

 

[Donna]

No, that didn't work. In addition to Page Cannot be
displayed, it says on very top...Cannot find server! I
have no clue what that's about. I can browse the
internet and open sites, just won't allow me to log into
them.