Dial-up phone splitter thing?

Finally got my sisters computer up and running. At her house the only internet connection available is dial-up. No problem.
Of course, she now has the internet vs phone problem.

I know there are programs out there that she could download that would allow her to still use her home phone while online, but I have no idea what they would be. I’m finding caller ID’s, answering machines… but not something that lets her still use the home phone line.

Help?

This link looks at most of the possibilities. I haven’t read through it, but there should be something in there she can use.

SSG Schwartz