How to use GPRS

Hi Group…

I hav designed a machine for kisok like fasility . I hav implemented
Win Xp Embedded as my embedded Os…

Now the problem is I hav only one GPRS Modem . I hav to implement this
modem for two work

  1. Remot Controling…
  2. Some other mibile device type work using direct serial communication…

I hav not ever worked in this segment…
I think I hav to Use PPP for this purpos.

please show the way how to implement this …

Thanks

Niraj Jha
www.qtelcomtech.com