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A local proxy on the Windows box would only let you punt the traffic off to the router. Unless the router then proxies for you after that you are left with the same problem.


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While the cable connects to a router, the DSL modem does not. This modem is directly plugged into the PC (it's an old ISDN DSL modem) and relies on the XP dial-up to work. It's not a router by itself. I imagine this would be a problem.


The fact that the PC has two network interfaces suggests that this wouldn't be a problem. You can configure one interface with a higher metric, so that all of the traffic goes there by default. Then, assuming that you get a local proxy that can be configured to always use the other interface, you can explicitly send other traffic that way.

Or did I miss something?

Cheers,
Roger.
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-- roger