Using Z As Proxy

I have a stock SL5500 standard Sharp OS, upgraded to the latest.

Here is the scenario:

2 network connections:

A. Corp firewalled
B. Wireless LAN (Open) similar to starbucks etc.

1 PC (behind corp firewall A)
1 Zaurus with WLan CF card (connected to Wifi

What I would like to do is to use the Zaurus as a proxy via the USB cradle sidestepping the firewall. Yes, I know I could simply ssh tunnel, but all of that traffic is monitored and WiFi B is not monitored so that would be my preference.

ideas?

Thanks
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