Answering my own question...

http://trac.openstreetmap.org/browse...tracks/gpx2svg
A script written in ruby to convert gpx tracks to svg graphics. Written by 'steve´?

http://maemo.mmapps.net/
What seems to be the latest port of Ruby for the Nokia 770.

Haven't tried it yet. Since the 770 browser supposedly supports svg-tiny, this should work with minimal editing.

Otto