Well, most Linux users will know of KDE and very likely kde-look.org, which is truly a great site for making Linux look that little bit better... Anyway, if you've downloaded a nice style you'll just have a load of source code, and, when I was new to Linux, the first thing I'd do was delete it - Now it seems silly, it really is easy to install. So, here's a lil example of installing a KDE style.

Step 1: For this example, I'll use Thin Keramik, http://www.kde-look.org/content/show.php?content=6986

Step 2: Extract the archive, for information on howto do this follow my previous article.

Step 3: Open up a console and change to the directory containing the code. - CD for me, this'll be cd /home/dave/Desktop/thinK/

Step 4: Type this, /configure --prefix=`kde-config --prefix` A load of things will pass through the screen, if it stops saying something about you need a newer version of something, or it cant find something, then, well, there's allot of looking around to be done, and it'd probably not be worth it.

Step 5: Once you've "configured" the code, type make. Again, lots of useless information will scroll down the console, and if all is ok, and you'll see something like "ERROR: some text" if it's not, then proceed to execute a command as root, type su -c'make install', you'll be prompted for your root users password, enter it and press enter. There, your new style should now be installed.

The process is also VERY similar for installing a native window decoration.

Note: If you encountered any errors it's probably best to consult the author of the style in question.