In need of hardware to connect to a mysql server over gprs
I think you may want something like this. It has a sim card slot and an antenna connector. It supports SMS text messages, GSM/GPRS, TCP/IP etc. To get started I'd get one of these and the corresponding evaluation board, transitioning to a custom PCB with a similar form-factor for the product. Then you can put everything into a neat square enclosure and off you go.