[Freegis-list] Distance between two points

[Israel Alvarez]

Hi!,
I'm using a GPS device to get my position (WGS84 format) and I would like to 
calculate the distance between two points. Could anyone tell me where to find 
some source code with the method? I'm really bad at maths, so I'm not sure if 
I'll be able to implement the method by myself(actually, I'm quite sure I'll 
not be able...)
thanks in advance,
ia