I saw your comment in Sparkfun.com on GPS (http://www.sparkfun.com/products/8975#), and you said to change the baudrate of the GPS i have to send in the command "$PMTK251,38400*27".
May I know what is the program that i have to run first, on the Arduino in order to allow me to send this command succesfully?
I tried sending it while running the following, but it ignored it:
reading this: http://diydrones.com/profiles/blogs/using-the-5hz-locosys-gps-with...
you have to connect the GPS with a ftdi cable to your pc usb port and use RealTerminal to send it. Note, that untill point 8 of 9 you would not connect it to the arduino.
If you don´t have a ftdi cable and are using the arduino like a way to comunicate with, have a look at the Patrick L post here: http://diydrones.com/profiles/blog/show?id=705844%3ABlogPost%3A1480... its for Ublox GPS but perhaps it could be usefull for you by changing the Baudrate to your gps factory default.