Wired/Wireless ICS networking problems..going crazy

I'm trying to cheaply setup one of my computers as an access point. I currently have 3 computers on a wired network all running with WinXP. I'm wanting to turn one of my computers into an access point so I can use a handheld device to access the internet. I went and bought an airlink awll4030 wireless USB adapter hoping that would work. When I got home and read the manual it basically said that it just links something to an existing wireless network and that was it. I checked the manual online and that one said you could put it in ad-hoc mode, which I'm assuming would make it into an access point (I'm really not sure.)

So I tried it out on two of my computers, and every time I tried to enable ICS on the "host" computer it kept telling me:
"Internet Connection Sharing (ICS) canot be enable due to an IP address conflict on the network. ICS requires the host be configured to use 192.168.0.1. Please ensure that no other client on the network is configured to use 192.168.0.1."

and

"Internet Connection Sharing cannot be enable. A LAN connection is already configured with the IP address that is required for automatic IP addressing."

When I emailed the company they told me to buy their brand access point instead. If I can manage it I'd really rather not because it is twice the price of the USB adapter I bought. The only other advice I can find is to get a wireless router, but then wouldn't I have to buy new wireless cards for every computer in addition to the wireless router?

Any help with trying to get this to work (or another possible option) would be greatly appreciated.

 

That is possible that your Router or modem (who is your ISP) uses 192.168.0.1 for the LAN. Change the router or modem to 192.168.1.1 for your LAN settings, and you should be okay.

 

I've decided to just get a wireless router to solve the problem, but thanks for your response.

 

A reply in the form of a related question..2 desktops running XPhome..1 using cat 5 to a wireless router..Other using wireless card to hit router..Both doing fine hitting INET through cable modem, but cannot do local network or file/printer sharing etc between machines.. Wireless router set for WEP with password which seems okay for wireless desktop..I will be adding a laptop wireless to INET access router and hopefully have a three machine network if I can ever figure it out. Tried all the ways microsoft suggests doing it to no avail..Is there simple step I'm missing?? Thanks for info....

 

Make sure that the Firewall allows the LAN to be considered "Safe", and that the Services that need to be running for File/Printer Sharing are running.