Firstly, what edition of windows are you using?
Windows 64 isnt an operating system, but i figure you mean its a 64-bit edition of a windows OS.
Its different on basically every edition of windows, but its not actually possible to 'delete' this computer and router, unless ofc you mean disconnect.
Do you mean you have an unknown user in your workgroup or using your router as an access point?
Do you mean you are detecting an unknown wireless router?
What do you mean?
What version of windows are you using that actually displays routers under a network.
Are you sure your not using some form of diognostic tool that is detecting computers and access points that you could possibly connect to?
Or are you using some kind of VPN?
Im sorry that i cant be of much help at present time, but you really need to be more specific and give appropriate information :)
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