[HELP] Multihop on Bluetooth

Hi all,

I must develop an application or a protocol that allows to create a multihop
networks of bluetooth devices. In this way, if the distance among 2 devices
is e.g 15m ,is possible to stablish a connection using other devices as
"bridge".
Example:
A<------------------>B
15 m communication is not possible
<------------------>

Instead, in this follow scheme, A and B can communicate beacuse distance
between A-C, C-D e D-B is 5m
A<----->C<----->D<---->B
| |
bridge bridge

What language can i use to develop this application/protocol?
I read Java isn't good for this problem and I also read thar Symbian is
better than Java in this case.
What are your counsils?
I apologize for my english ;-)
Thanks so much!

Roberto