Otter,
take a look at this
script. It is written to parse the Kismet log file and generate a Google Earth .kml file with the found APs. I haven't been able to get the script to work in it's entirety; Google Earth complains about the file format, could be a version issue or something unique to my data set so you may have more luck.
However, it has provided an excellent framework to kick start my own utility, with which I had basic success last night. Hopefully I should have a basic solution generating static maps before the end of the week, before moving to interactive maps and potentially taken a fresh look at the .kml file format.
Hope this helps, I'll shout when I have anything useful available for distribution.