Having fax capability and having the internet are two different critters. Both use the same modem but that's where the similarities stop. Your modem should have come with a software suite that will interface with the modem or you c an use the Windows Fax Console:http://www.microsoft.com/windowsxp/using/setup/learnmore/crawford_02october21.mspx
I have fax capability with my computer, but have never used it. I am on dial-up. My question is, where do I get a fax number to use, and will my ISP charge me more money for using the fax feature? Will the telephone company consider this an additional line and charge me extra?