Do you want to make GPS tracker. Look this project. It based on the MSP430F5510 (low power microcontroller by Texas Instruments - 25MHz, 32KB FLASH, 4KB SRAM, 3x DMA, I2C, SPI, UART, LIN, IrDA).
The microcontroller receives valid data from GPS and it sends data to his server through HTTP request. Google Maps API shows way. The interval of tracking is 10 minutes.
You can find complete project (PCB and firmware for microcontroller) on the webpage.



Project is here:http://forum.43oh.com/topic/5788-msp430-tracker/