Installing 11i

I have tried to take the online course at the opn site, but I couldn't. I received an error, so I have to try again. I also tried to install 11.5.9 on my laptop, I bought an external hard disk, but that not as easy as I thought. Before installing 11i on windows, you first have to install all kind of tools, like gnumake etc..It seems the EBS 11i was designed for Unix only, so the install only uses unix shell scripts instead of windows executables....Tomorrow I will continua the install.