Powershell 2 script to change the IP with arguments

SetIP.ps1

# Usage: powershell -File SetIP.ps1 -ip "101.54.149.103"
# Works on Windows 7 64bit

# get params
param (
   [string]$ip = "101.54.149.106",
   [string]$gw = "101.54.149.1",
   [string]$sub = "255.255.255.0",
   [string]$dns1 = "101.61.241.311",
   [string]$dns2 = "101.61.251.311"
)

Write-Host "IP Addr: $ip"
Write-Host "Gateway: $gw"
Write-Host "Subnet:  $sub"
Write-Host "DNS1:    $dns1"
Write-Host "DNS2:    $dns2"

# change IP address
$wmi = Get-WmiObject win32_networkadapterconfiguration -filter "ipenabled = 'true'"
$ret = $wmi.EnableStatic($ip, $sub)
$ret = $wmi.SetGateways($gw, 1)

# set dns
$ret = $wmi.SetDNSServerSearchOrder([$dns1, $dns2])

# set suffixes (suffices?)
$ret = $wmi.SetDNSServerSearchOrder("old.domain.com domain.com new.newdomain.com newdomain.com")