Anybody Please help

The problem is, we have a wireless TV in the conference room with access
point that has the SSID as 'AddLogix-0' subnet 255.255.255.0 and our own
office wireless network is with SSID - UDC, subnet 255.255.255.0 . So, if any
guy with Laptop would want to connect to our network (for internet etc) and
the wireless TV Access Point (AddLogix) at the same time, without an external
bridge, how is it to do that using Windows XP as client? I tried, using a
laptop with an in built WI-FI card and another external WiFi Adapter with
the vendors software to connect to the other network. But Windows wireless
zero configuration gets connected to only one at a time, whereas I need both
simultaneously. Could you pls suggest a way to access both wireless networks
simultanouesly? What could be the problem here that XP connects only to one?
Anybody please help

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