Question : Bandwidth Monitor and Speed checker program for server 2003 ent edition

Hello all
I need to install a program over my server 2003 ent edition to check onto the Bandwidth, Speed (of the whole network).  Easily configurable program is preferrable.  Which one is better and offers better reporting tools?
Note: My planning is to install it onto my gateway which gives access to internet to all machines.  
Help Regards

Answer : Bandwidth Monitor and Speed checker program for server 2003 ent edition

so go ahead... adventnet makes nice products... I have tested lots of their applications and they end up consistent...