GPS Data Logger Software - BT747

Starting bt747 I see following exception from java:

Folks,

I just upgraded myself from Suse 11.4 to Suse 12.2.

When installing BT747 I obtained an error message that RXTX-Java is missing.

Does anybody know where to find that Java component.

Thanks in advance.

Don't know if this request belongs here, but with the new iPhone 3.0 it seems like it might be possible to access bluetooth GPS loggers. If so, I would love to have an iPhone app to download tracks to and also be able to access realtime GPS data from my iTrek Z1 logger. I have a first gen iPhone without GPS, but also I know that using even the iPhone 3G as a GPS data logger is not ideal, because:
- can't run logging in the background
- hurts battery life