When running OS X Leopard, many people are annoyed by the glass dock provided by default. There are several applications that can be downloaded to remove this but we found a very easy way of removing the glass dock. In a shell type:

defaults write com.apple.dock no-glass -boolean YES

Next, it is time to remove a couple of files. Type the following:

cd /System/Library/CoreServices/Dock.app/Contents/Resources

Delete the glass dock images by typing:

sudo rm -Rf bottom*.png

Now it is time to restart your dock:

killall Dock

That is all!