I have finally sorted out my HP TC1100 wireless problem. I was having issues getting the TC1100 to connect to my 802.11g Airport wireless network.
I had confirmed that the Intel 2200 BG card in the Tablet supports WPA and I have updated Windows XP to support WPA as well.
The Intel 2200 BG card also supports 802.11g.
I say that as the solution was to switch the Airport Extreme from 802.11g only radio mode to 802.11b/g mode.
In this mode the TC1100 has no problem connecting to my WPA/WPA2 network!
It’s not as even though the TC1100 is connecting at 802.11b 11 Mbps speeds, as the speed shown in the connection window though fluctuating is greater than 11 Mbps!
So if you are having issues connecting to an 802.11g network with a laptop with the Intel 2200BG card, revert to b/g compatability and see if that makes a difference.