Network Management ?

well i need to build a Network Management Tool in VB .. lemme try to explain
assume that i m on LAN or DSL .. and my computer's IP address is something like 10.0.0.61 .. and there are some other computers on my network aswell having ip addresses like ( 10.0.0.40 , 10.0.0.19 , 10.0.0.8 ) ..
now i want to make something in VB which could lemme see the Data Bandwidth of any ip on my network ..
like i input the ip ( 10.0.0.19) .. it should show me the current usage level .. amount of data packets recieved , sent ( in graphical or tabular form ) and should continously keep on updating those statics and should store those statics in some file aswell at hourly basis .. are you getting me ..
On my job . i have to monitor certain clients .. and i need to make this thing for that very purpose .. i need ur suggestions . that from where should i start ..
regards

have a look at this,

http://www.vbip.com/iphelper/get_interface_info.asp

Moved to Network Programming

I suggest using the WinPCap library (similar to how www.ethereal.com do it) and then infer from there how much bandwidth is being used. You will have a problem though because all data may not be going past your computer. If you are connected to a different switch then you may never see most of the traffic on the network.