Problem with Roaming - not switching APs

I have several Orinoco RG-1000's in my house all set to the same SSID but
each on a different channel. When I move around the house, my Windows XP
SP2 laptop does not switch APs. The signal just gets weaker and weaker. To
switch APs, I need to disable my network connection and restart it.

Is there anything I need to do to enable roaming?

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Lucas Tam ((E-Mail Removed))
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