Hi,
this is a nice PHP-script. It generates a map and draws the ACCESS POINTS in (APs).
Map generator for Netstumbler Files
introducion:
1. export your Netstumbler File to Summary
File---------->Export------->Summary
2. upload the summary file on an FTP-Server
3. put the URL in the url field, for example
h t t p : / / w w w . i c h . b i n / e i n / b e i s p i e l . t x t
The accuracy of the map depends on the dissolution.
The dissolution is determined by the maximum distance of two APs in your file.
*sorry for my bad english*