They are both primarily designed to protect against viruses/spyware and other nasty bits that are not yet on your machine, though they each also include a "virus cleaner" if you have reason to believe that you are already infected.
That's why they need to regularly update the virus definition database, so that they know what to block.
Are they browsing using a router? It may have a firewall built in for inbound traffic.
Outbound traffic can be restricted with an old version of Zone Alarm. It stopped supporting Windows 98 from v6.5, but you can download the last supported version here.
Ah thanks both of you. CTT, this is what I was expecting- basically a 98 compatible version of what Hobbes set up for me which seems to work well. Thanks again.
This oldversion site looks good. Anything else you think I might need for my friend from there?
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