The evaluation board for the ADH8066 Cell Module breaks out all the pins to the module and provides you with the necessary support hardware to get you up and running. The ADH8066 board attaches to any USB port and appears as a standard com port. Power up the board with 6-12 VDC, turn on the module, and you can start sending and receiving AT commands via HyperTerminal or your favorite terminal program. Project description, more information and ordering can be found at https://www.sparkfun.com/products/10164 Datasheet: http://www.sparkfun.com/datasheets/Cellular%20Modules/ADH8066.pdf AT Command Reference Manual: http://www.sparkfun.com/datasheets/Cellular%20Modules/ADH8066-AT-Commands-v1.6.pdf Enhanced AT Command Reference Manual: http://www.sparkfun.com/datasheets/Cellular%20Modules/ADH8066-Enhanced-AT-Command-v1.6.pdf Hardware Application Notes: http://www.sparkfun.com/datasheets/Cellular%20Modules/4-ADH8066-HW-Applicationv1.3.pdf Software Development Guide: http://www.sparkfun.com/datasheets/Cellular%20Modules/7-GSM-GPRS-Software-development-guide.pdf Firmware Update: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Cellular/Downloader%20customer%20V1.0.zip