They are free but you need to have the relevant software installed for it to work and that might be free or it might be a commercial product depending on what it is. <br /> <br />Whatever the category of the skin or theme you are trying to install, that is the program you need to get hold of in order for it to function on your computer ( WindowBlinds, Sysmetrix, CursorXP etc. ) <br /> <br />When you open a page for something you want, say you want Aroche´s Dark Blue Rainlender skin (
http://www.skinbase.org/rate.php?skins=29115 ), first download his skin and save it somewhere on your pc... but if you haven´t got the Rainlender program already installed, click on ´Rainlender Skins´ on the title line and on the next page that opens click on the house icon to go the program homepage where you can then download the software . Install that on your pc, put the downloaded Dark Blue skin file in the programs ´skin folder´ and voila! you´ve got yourself a new skin to use.