I'm also running into a problem. Im still a giant noob at this, having just started, but I wanted to use this command. What do spots do I fill out, or, what do I replace? Where do I put the uninstall string, what words do I delete, and how can I get the software name if that's required?

$software = Read-Host "Software you want to remove"
$paths = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall'
Get-ChildItem $paths |
    Where-Object{ $_.GetValue('DisplayName') -match "$software" } |
    ForEach-Object{
        $uninstallString = $_.GetValue('UninstallString') + ' /quiet /norestart'
        Write-Host $uninstallString
        & "C:\Windows\SYSTEM32\cmd.exe" /c $uninstallString
    }