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Posting the results of ipconfig /all on all computer may help.

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Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
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"stmts" <> wrote in message
news:A7358D0D-1848-4473-A9F9-...
> I'm using Win XP on my laptop and I have no problem with my wireless
> connection to the Internet using a Link sys wireless router that's
> connected
> to a cable modem.
>
> I recently added 2 additional laptops to my wireless setup and all 3
> computers connect to the Internet ok. But. when I turn the original laptop
> off, the other 2 computers can't connect to the Internet. My original
> laptop
> must always be turned on.
>
> These other 2 laptops do connect to the Internet however when I use them
> at
> the coffee shop that offers free wireless connection. What's wrong with
> my
> setup at home?
>