The only thing the pro package gives over the unlimited is the faster upload speed. However, you have to sacrifice some download speed to accomidate for the frequencies to be allocated to the faster upload you will have.
If you have the DG834N router you should be able to use this on the Be service using the following settings ;
Code:
Select ETHoA or Routed Ethernet over ATM or 1483 Bridged connection
There is no login information required
Encapsulation : LLC
VPI : 0
VCI : 101
MTU: 1500
The Be router is okay... it's that it tends to overheat and in a laymans term crap out and freeze when you have too many concurrent connections open when using software based around P2P protcols - mine crashed 4 times downloading the WoW updates recently.