Best bandwith monitoring program?

[topslop1]

I have been getting some serious lag spikes on Xbox Live while playing GOW2. Now I share a connection with my family and I'm not sure if I'm getting spikes due to bad LIVE servers or if someone is doing heavy usage (i.e. running torrents). Is there an easy to use bandwith monitoring program that will let me see each computer's bandwith draw from the router?

 

[Grentz]

What do you use for a router?

The best bandwidth monitoring comes from routers as they see all inbound/outbound traffic directly. But most consumer routers lack monitoring functions.

 

[topslop1]

Yes, I have a Netgear WGR614 v8 router with wireless capabilities.