Why can't you just type in the password yourself? I use VNC which I believe works the same way that the apps you mentioned do. It "screen scrapes" and it's just like I am sitting at the desktop.
If those apps cannot intercept a UAC prompt, then you can try using runas.exe. Open a command prompt (or powershell) and run this with your admin account.
runas.exe /user:admin "powershell.exe start-process cmd.exe -verb runas"
Runas.exe will prompt you for the admin user's password. When Powershell runs, you will get a UAC prompt where you just need to click on the Yes button to continue.
You will end up with an elevated cmd prompt windows that is running as your admin account. From there you can run the setup.exe for the install.