Stop Windows Vista from flooding your network

To stop Windows Vista from flooding your network with traffic:
Press WinKey+R.
Type “services.msc” (without the quotes)
If asked for permission to open “Microsoft Management Console”, click Allow.
Double click on each one of the following services and change its startup type to “Disabled”.

Base Filtering Engine
IKE and AuthIP Keying Modules
IP Helper Service
IPSec
Windows Firewall
Close the Services window and restart Windows.