Elevate MSI install while allowing user based actions

Question

Yes, there are many articles related to elevating permissions when installing MSI packages. I have a twist on the issue that I can't find a good answer to. If I'm logged in as a user and I run my MSI elevation code (Below), the package installs but the current user actions are performed on the user I elevated the installer with.
For example, if the MSI adds a file to the CURRENT USER's desktop. The result of elevation (running as "Joe Admin") is the file gets put on Joe Admin's desktop -not the currently logged in user ("Sally User"). I have owned software that Elevates as Joe but puts the file on Sally's desktop as if she installed it. -I'd like to write my own. This is on a Windows 7 Machine, UAC is turned off.

Here is the non-working code. (Sally is logged in, Elevate as Joe -File goes to Joe's Desktop) (LoadUserProfile property was an attempt to solve this issue -didn't work).

    Process watchThis = ImpersonateInstaller(@"c:\temp\Test.msi", "SuperJoePassword");
    watchThis.WaitForExit();       

    private static Process ImpersonateInstaller(string msiPath, string Password)
    {
        Domain d = Domain.GetCurrentDomain();
        Process process = new Process();
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.LoadUserProfile = true;
        process.StartInfo.FileName = @"C:\Windows\System32\msiexec.exe";
        process.StartInfo.Arguments = string.Format(@"/i {0} REBOOT=ReallySuppress /qb-", msiPath);
        process.StartInfo.WorkingDirectory = Environment.GetEnvironmentVariable("WINDIR");
        process.StartInfo.UserName = "JoeAdmin";
        process.StartInfo.Password = new SecureString();
        process.StartInfo.Domain = d.ToString();
        foreach (char c in Password.ToCharArray())
        {
            process.StartInfo.Password.AppendChar(c);
        }
        process.Start();
        return process;
    }

Answer 1

From an elevated process call msiexec /jm foo.msi to perform an advertisement. This blesses the package. From a standard user process call msiexec /I foo.msi REBOOT=R /qb and this will start the installation off as the user but elevate seamlessly as needed. Standard Actions and Custom Actions with No Impersonation will run as SYSTEM and Custom Actions with Impeornation will run as the user without privs as designed.

Answer 2

With Help from Christopher Painter, this appears to be the answer (THANKS CHRISTOPHER!!!) I've read the words "advertise" before and always assumed it had something to do with 'publishing in GPO' so I never follwoed through. Seems I'm wrong. Here's the trick should anyone else run across this.

First, advertise with elevated rights to "bless" the msi for end user installation. In my mind an adminstrator is saying, sure this msi is safe for Sally end user to install:

msiexec.exe /jm install.msi

Then, install as the end user as if they are admin:

msiexec.exe /i install.msi /your /typcial /installOption /switches /here

My code (surely could be better):

        Process advertise = advertiseMSI(@"c:\temp\test.msi", "JoeWhoHasAdminRights", "Joe'sSuperPassword");
        advertise.WaitForExit();
        Process install = installMSI(@"c:\temp\test.msi");
        install.WaitForExit();


    private static Process advertiseMSI(string msiPath, string userName, string Password)
    {
        Domain domain = Domain.GetCurrentDomain();
        Process process = new Process();
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.FileName = @"C:\Windows\System32\msiexec.exe";
        process.StartInfo.Arguments = string.Format(@"/jm {0}", msiPath);
        process.StartInfo.WorkingDirectory = Environment.GetEnvironmentVariable("WINDIR");
        process.StartInfo.UserName = userName;
        process.StartInfo.Password = new SecureString();
        foreach (char c in Password.ToCharArray())
        {
            process.StartInfo.Password.AppendChar(c);
        }
        process.StartInfo.Domain = domain.ToString();            
        process.Start();
        return process;
    }

    private static Process installMSI(string msiPath)
    {
        Process process = new Process();
        process.StartInfo.FileName = @"C:\Windows\System32\msiexec.exe";
        process.StartInfo.Arguments = string.Format(@"/i {0} REBOOT=ReallySuppress /qb-", msiPath);
        process.StartInfo.WorkingDirectory = Environment.GetEnvironmentVariable("WINDIR");
        process.Start();
        return process;
    }