Actually, that's not what I was asking. I know how the coordinates work, in fact, MS Streets and Trips 2004 give you the coordinates in N/S, E/W and in decimal, not DMS. However, here's my problem. If i'm wardriving, netstumbler would pick up a signal, and then I could just look up the actual address of the house that I'm near in MS Streets and Trips to get the coordinates to use as a reference for Netstumbler. However, if you've ever looked at an exported netstumbler summary, the coordinates come out as N and E and 0.00000. I wanted to know if I could just edit the file and change the coordinates to N and W and whatever the decimal values are that I get from MS Streets and Trips...is this an "ok" option?