Hi Debbie,
Start with the basics. Does your router have encryption turned on? If so,
are you certain the Vista PC has been configured to properly match your
router's encryption settings (i.e. security key, encryption type, etc.)?
Have a look at one of the XP machines to see what their settings are and
match them on the Vista machine.
Tim
"dedowap" <dedowap@discussions.microsoft.com> wrote in message
news

93F929B-E8E8-4E02-A588-5BAE9C7736D9@microsoft.com...
> Hello...I have a new computer with the new vista. We have had a wireless
> connection with a router for some time now with several commputers
> accessing
> it, they all have XP. I have entered the wireless network and it appears
> in
> the manage wireless networks section but not in the availiable networks
> when
> I try to connect. I am not sure of what to do I feel like it is a security
> issue and the two are just not communicating, but I don't know how to fix
> it....please help...Debbie