How do I install the forum_2.3.2.1.3.9 to my geeklog site?

I have recently downloaded this forum and want to add it to my website, but how?

Please help me.

Try reading the included installation instructions ...

Yes the instruction files are very well written, give them a chance.

I don't understand the help files. I have no idea where to put the files on my ftp thing, or how to install it. I have copied them to a file named forum in the plugins folder!!!

That's as far as I have got.

Please help me someone.