iPaq 3870 - Acer BT500 --> LAN ?????

Hello Newsgroup,

Does anybody know how to connect the iPaq3870 to a local network ?
I installed the software for the Acer BT500 bluetooth dongle and used the
v1.3.2.7 drivers.
ActivSync works perfectly, but LAN doesn't work.
I always get the error : "Device iPAQ PocketPC does not support service LAN
acces".
Looking at the package of the Acer adapter (reference table) indicates that
Network Access is supported for PC/Notebook and PocketPC.
The types of PC/Notebook and PocketPC are even mentioned :
PC/Notebook : Hitachi FLora 270HX
Pocket PC : Compaq IPAQ 3870.

So I suppose that it has to work but that I'm doing something wrong.

Strange is also the fact that after starting bleutoot manager on my ipaq
doesn't give the option "connect tot LAN"...

Looking at Geekzone didn't solve the problem, unless I did look over it...

Regards,
Zenith