I go to install it and here is what I see:

"The filename "RealPlayer10GOLD.Bin" indicates that this is of type "unknown". The contents of the file indicate that the file is of type "executable". If you open this file, the file might present a security risk to your system.

Do not open the file unless you created the file yourself, or received the file from a trusted source. To open the file, rename the file to the correct extension for "executable", then open the file normally, alternatively use the open with menu to choose a specific application for the file."

yet I check my home folder and RealPlayer created a folder there with different codecs and other things in it.

I am running FC3

What is going on?

You know what, I have never installed any thing in linux yet because there is ALWAYS a problem, nothing has yet to ever work for me.

Try installing it with root permissions.....

we need to know the exact steps you took to install
"i go to" contains very little information to "go on"

I was logged on as root. all I did was open my computer and selected the CD ROM, and once I had seen the file on the cd, I double clicked it, and then that message came up. I then tried copying it to my hard drive and then executing it but the same thing happened.

Install it from a terminal emulator.

what is a terminal emulator and where do I find it?

Terminal emulators, are programs like konsole, gnome-terminal, xterm, rxvt etc.