Script to read and compare registry entries

I am very new to PowerShell and I am getting stuck on this question.

Read the registry entries from both of the locations named in the project description.
HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Run HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Run
Compare each entry to a list of acceptable entries. The acceptable entry list is from a text file named "Acceptable_Reg.txt" that will accompany the script when the script is downloaded.
Produce a text file report that lists all unacceptable registry entries. Save the report using the computer name as the file name.
Transmit the report file to the following intranet address: intranet.xyzcompany.com/bad_reg.aspx

I have come up with this so far...but I don't think this is the right way to go about it. I know I will probably need to use the compare-object cmdlet but am unsure how to apply it.

$path1 ="HKCU:\Software\Microsoft\Windows\CurrentVersion\Run"
$path2 = "HKLM:\Software\Microsoft\Windows\CurrentVersion\Run
$destination = "(FileName.txt)"
$results = Get-ItemProperty $path1 $path2

Any help on this would be greatly appreciated because my professor is unable to provide me any type of help with the actual script.

Solution

For comparing if you have exported the reg files, you can do:

$location1 = "C:\temp\location1";
$location2 = "C:\temp\location2";
$location3 = "C:\temp";

Compare-Object $(Get-Content "$location1\file1.reg") $(Get-Content "$location2\file2.reg") | 
    Where-Object { IsNotAccepted($_.InputObject) } | 
    Out-File "$location3\NotAcceptedEntries.txt" -Force

function IsNotAccepted($entry){
    $accepted = $false;
    # $name = $entry.Split('=')[0]
    # $value = $entry.Split('=')[1]

    # Put your logics here

    return -Not($accepted);
}

Note that $_.InputObject represents the entry, e.g.

"C:\Program Files (x86)\7-Zip\7z.exe.FriendlyAppName"="7-Zip Console 2"

You also can know in which file was that by checking $_.SideIndicator. If it returns => it means right file (file2.reg) has that difference. Conversely <= means the difference was found in left file (file1.reg).