Windows 7.
Every time Windows 7 sees a WiFi point it adds it to the registery at HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad my 6 onth old instalation now has over 200 unused connections, can ccleaner compare the registery to the Windows GUI list and delete unused items.
In a similar way....
Every time a network connection is deleted from windows it leaves a registery listing these can manually be deleted from the reistery, I can't find the location right now.
This occurs frequently when VPN software is installed/uninstalled or a network card is changed. I am now up to Tunnel adaptor Local area connection*21 when I run ipconfig/all
Some of them can be deleted by doing the following,
Open Start Menu
Type In: Device Manager
Select Device Manager
Click the View menu from the top
Select Show Hidden Devices (Must be check before continuing)
Scroll down and expand Network Adapters
Right-Click a duplicated Microsoft 6to4 Adapter or Microsoft ISATAP Adapter
Select Uninstall
Click OK for the pop-up warning message
Repeat and repeat for each of the unwanted duplicated adapter
Close Device Manager when finish