How to set up your HTC P3300 to allow access to the GPS via a COM port.
Open the GPS Programs Properties page: Start->Settings->System->GPS
Choose a free serial port - generally COM4 is used - this is the port you will choose in your GPS program.
The GPS is built in, so you can choose (none) on the Hardware property page (baud rate appears to be ignored).
Tick the box to enable your program to access the port you chose on the programs screen.
You can test it using Serial Data Logger (download here) by KRMicros (http://www.krmicros.com):
