I am helping an older gentleman learn to do email and his used computer is a Compaq running Windows 2000. Outlook Express worked the first time I set it up for him and then when I went back a few days later it won't send or receive emails. I uninstalled IE and OE and then reinstalled them and then when that didn't work I phoned his Internet server and they said the error sounded like a firewall was in place. I have no idea what he did or whether the machine even has a firewall.
Does Windows 2000 have System Restore? Is there a way to tell if there is a firewall and if so, how to get rid of it? I am just a self-taught computer software user and not up to speed on much else.
Thank you for any help. (I can't give you the error message right now as I am not at his house and he isn't home)