Personal skinning?

Can someone link me to a tutorial on how to make your own skin? And one for hexing, if possible. Thanks.

[editline]10:38PM[/editline]

Okay, I found out how to do it. Now I just need to know where the hell the materials is…

Get GCFScape. If you want materials, it will usually be in Program Files/Steam/steamapps as source materials.gcf or team fortress materials.gcf etc.
http://nemesis.thewavelength.net/index.php?p=26