Remote Windows Update Deployment Questions

[TrenalFrenal]

First off, I am a scripting novice and you'll be able to tell by the example. A co-worker of mine is responsible for the patch management of multiple customers with multiple locations per customer. We are having some bandwidth issues related to patch management at some of the locations and I wanted to come up with a way to download the updates we need to push out to a central machine at those locations and push the updates from that device. My first attempt at a push script is below, obviously it isn't built for multiple machines yet but I wanted to verify that I am deploying the updates the best way possible. I was hoping someone could point me in the right direction for the remote deployment.

Thanks in advance.

$a = InputBox ("Share", "Please enter share path", "")
$b = InputBox ("XP Machine Name", "Enter Machine Name", "")
$i = 1

FileInstall("D:\Patches\winxp.txt", "C:\winxp.txt", 1)
Sleep (500)
FileInstall("D:\Patches\psexec.exe", "C:\psexec.exe", 1)
Sleep (500)
$file = FileOpen("C:\winxp.txt", 0)
Sleep (500)
RunWait(@ComSpec & " /c " & "net use r: " & $a)
Sleep (500)

If $file = -1 Then
    MsgBox(0, "Error", "Unable to open file.")
    Exit
EndIf

While $i = 1
    Patch()
    $i = $i + 1
Wend

Func Patch()
    While 1
        $line = FileReadLine($file)
        If @error = -1 Then ExitLoop    
        RunWait(@ComSpec & " /c " & "r:\psexec.exe \\" & $b & " -c " & "r:\" & $line & " /quiet /norestart") 
    Wend
EndFunc

RunWait(@ComSpec & " /c " & "net use /d r:")
FileClose($file)