I was trying to create vintage/steampunk desktop many times, but it´s not very easy on linux. There aren´t actually such themes. I was thinking about creating my own theme, but I have no time... maybe later.
This is just a little try:
The theme is "Willibex" but the window border is "Dust" (U 10.04 basic installation), I think it suits better. Also the vintage cairo clock skin is amazing.
The wallpaper suits great to the color of the menu, windows and even the clock. And I also like magic
The dock is Gnome-do docky and icons are "Buuf icon theme"
So you can let me know what you think about it..
P.S. Iam waiting for these icons
be sure to check them out! They will look great