at last i have connected my laptop to desktop, and i can access the internet
via the desktop. I  cannot access files on it though!!! it shows up as not
authorised. Any ideas anyone?

Hi
Successful Sharing involves some general consideration in Network settings,
http://www.ezlan.net/sharing.html
As well as specific adjustment of each computer according to what is allowed
to be shared.
http://support.microsoft.com/default.aspx?scid=kb;en-us;304040
Jack (MVP-Networking).

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