LXDE and XFCE are made for slower computers....
 

this is correct right?

they are made to be lighter, which has the benefit of being better on slower machines, yes

They work great on faster computers too. :)

Before installing any Linux distribution, find out what your hardware specs are, and compare them against the recommended hardware requirements for that distro.

Using DEs or WMs with lesser bloat is of course better on low spec machines. But if you don't need the bling and features of the "great" DEs like KDE or Gnome you can use this WMs and DEs just fine on high end machines. I for myself could run KDE or Gnome without any problems, but I don't need them. I'm running fine with Openbox, no, thats not true, I love Openbox for it's simplicity and high configurability.

...so where can I download this OpenBox...I tried Openbox.com, their DL page is a bit complicated for my experience. Can you supply a direct link (http or ftp)?

I don't know which distro you are using, but most Linux flavors have Openbox in their repositories. Go to the wiki for your distro, I am sure there is explained how to install Openbox on your machine.

Linux is not Windows.

You don't download a GUI installer from the website, you use your package manager.

Thanks that helped.

Nah -- going from KDE to LXDE is like taking the 318 out of your Dodge and putting in a 383.

Yeah... And switching from GNOME to Xfce is like taking the single engine out of your car and putting in a Quad Turbo...

Especially LXDE.

If you want a truly lightweight wm i would suggest taking a look at the tiling window management paradigm. Preferably stumpwm, ratpoison, dwm etc, have very minimal resources consumption and they're pretty easy to grasp quickly. Other than that my vote would go to fluxbox or openbox depending on your needs/taste.

Running LXDE on a 1750(1.4ghz) AMD Geode, 692mb mem. I like it alot.

PCLXDE is fun to run! So is driving a hipo car. Intent matters not as much as end result, methinks.

And going from Gnome or KDE to openbox is like taking a car that didn't have an engine in it and putting an engine in it... >.>

@OP: By the way you can also download the source and compile it. It's generally not that hard if you know basic terminal commands. Just read the README and INSTALL for instructions on how to do it.

Also you can find openbox by using google. It is the first entry. I use openbox on my easypeasy netbook and it's lightning.