C++ MFC button triggered executable

I want to add more than just one hentai game to my DVD to save on wasted space and amount of DVDs I need to use overall.

I plan on changing the Autorun.inf to trigger my MFC app rather than the setup.exe for any of the games, that way I can choose what game to install and have several on the DVD.

I'm using the MFC I used for one of my assignments where I changed the desktop picture with buttons.

What do I put in to make it contact an exe file on the disk?

This is the code right now:
void CAssignment5Dlg::OnBnClickedButton2()
{
    SystemParametersInfo();    //Sultan
}
what string or code do i put into the brackets?

don't put numbers in names of controls or variables. ever.