Network Connections disappeared in Network sharing center

I noticed that my Network connections (Local Area connection, Bluetooth
connection, Wireless connection) disappeared SP1 Vista Home premium Update.
Though my wireless still works fine through the notifications area.

What can i do to make this appear because i cannot use static IP on any of
my connections.

I also noticed that i cannot do system restore on my PC again. i always get
an error mesaage "system restore was not completed due to undesirable error"
i dont know what this means. I noticed that resore point creation has been
disabled by Group Policy. i dont run Active directory neither am i connected
to one.


Please help me !!!!!!!