Displaying actual ADSL line usage not the PC Local interface capability

Reference: Vista Home Premium

I have been wondering for a while if its possible to change the utalisation
bandwith limits when monitoring the network usage within Windows Task
Manager?

Expanding on the above
Most ADSL asymetric circuits do not mirror that actual capabilities of the
Local Network of the PC.
I.e The lcoal network can be 100Mb full Duplex for ethernet, or something
lessor if you are talking Wilreless.

Is there a way to amend the "bandwidth" so the calaculation are really based
on the amended bandwith that is available to the ADSL device. For me that
484 /8096Kb.

This is really just a cosmentic request as I realise that this would not be
really accurate if more than one PC was on the network or the ADSL device
was doing some housekeeping traffic.

Regards
Don