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@gotou wrote:
I bought a used latitude c600 from Overstock.com. It came with no operating system and no manual! I put Win XP on it. It has a modem jack and a network jack, looks like a combo unit. The problem is that the modem works but I cant get the network to work. Could it be made that way? Do they make units where even if you have both only one thing or the other would be functional? Every driver set that I've downloaded says theres no network card. The modem shows up as an LT win modem.

Thanks for your help in advance.

GO

It could have been sold with a modem or a combo card.  Apparently you just have the modem.  Open the compartment and look.  Or go into Device Manager and see what it says.