þÿ$wc = new-object net.webclient

[regex]$regex ="(?<url>http://download.microsoft.com/download/./././[0-f]{8}-[0-f]{4}-[0-f]{4}-[0-f]{4}-[0-f]{12}/(?<file>[^>]*?wmv))"

[xml]$xml =  $wc.DownloadString("http://www.microsoft.com/feeds/TechNet/en-us/How-to-videos/SQL_Server_2008_Microsoft_Certified_Master_(MCM)_Readiness_Videos.xml")

$xml.rss.channel.item | foreach {

    if ($wc.DownloadString($_.link) -match $regex)

    {

        $url = $matches.url

        $file =  "$home\Videos\$($matches.file)"

        if (Test-Path $file) 

        {Write-Host "$file is already there mate"}

        else {

            Write-Host "Downloading $file"

            $wc.DownloadFile($url,$file)

        }    

    }

}