By all means look at the cermatek or xecom modem modules; $50 qty 1, and
you're done.  They have DAA, modem, everything in there, and all you need
to do is talk to them as if they were any serial device.  They're great.

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Bruce Cannon
Style Management Systems

Remember: electronics is changing your world...for good!

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> I want to make a home built modem for my PalmPilot (PDA from
> USRobotics). The main reason is that the product specific modem costs
> 200 buck where i live. And although I CAN use any external modem. They
> tend to be quite big in size. So i jus want to build a small modem (not
> worrying about speed, because it's just to send e-mail).
>