Software Deployment

Checking the computers that have it installed will be the most reliable way to be sure you have the right GUIDs but you may also look to the "Inventory Records" for each of the versions in the Software Library for uninstall commands like this. http://www.itninja.com/software/winzip/winzip-1/16-89

Not perfect, the GUID string replacement can be improved and some other small things, but this powershell script should work. It goes through everything registered in Add/Remove and uninstalls it based on it's uninstallstring GUID. It also checks if the uninstallation failed.

Only works with MSI's and i take no responsibility for what might happen if you use this :P
It MUST run in Powershell x86 if you're using a 64bit system. SCCM launches powershell x86 automatically if you call powershell.exe in the program.

function checkExit([int]$i)
{
    if (($i -ne "0") -and ($i -ne "3010"))
    {
        [Environment]::Exit($i)
    }
}

$MSISwitch = "/qn"
$OS = Get-WmiObject -Class Win32_OperatingSystem

if ($OS.OSArchitecture -eq "64-bit")
{
	$Arch = "x64"
	set-alias ps64 "$env:windir\sysnative\WindowsPowerShell\v1.0\powershell.exe"
	$installedsoftware64 = ps64{Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object Publisher, DisplayName, DisplayVersion, UninstallString}
	$installedsoftware32 = Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object Publisher, DisplayName, DisplayVersion, UninstallString
	$installedsoftware = $installedsoftware32 + $installedsoftware64 
}
else
{
	$Arch = "x86"
	$installedsoftware = Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object Publisher, DisplayName, DisplayVersion, UninstallString
}

Foreach ($Application in $InstalledSoftware)
{
    If ($Application.Displayname -like "*WinZip*")
    {
       $UninstGUID = ($_.UninstallString -replace ".*{", "") -replace "}.*", ""
       $Uninstall = start-process -filepath "msiexec.exe" -argumentlist "/x {$UninstGUID} ", $msiswitch -passthru -wait
       checkExit($Uninstall.ExitCode)
       Remove-Variable -name "Uninstall","UninstGUID"
    }

}