Faxing with PPC?

[linenoise]

So I've been searching for months now, and I still can't find any software for this. I know it's possible to fax with my PPC6700 when it's tethered to my laptop, but I get charged with old school "Wireless Web" minutes, even though I have unlimited data. That's .38/min. So, my question is.... Is there any software out there that can loaded into my phone, that will let it fax a file that I have on my phone? I'm guessing it needs to know that there is an internal modem called cellular line.
Thanks in advance,
Line Noise