I'm on XP. These are mostly opinions as the skin is well built. Ignore them at will. 
Remove the "please wait" text from the loading screen. The loading screen is well done otherwise.
Your system text color is a beigy color and should be black to make reading text as easy a possible.
The text in the allprograms menu is harsh with the 3d shadow.
The animation in the start panel could use some more frames. It's a bit choppy.
Don't be afraid to add some more turquoise throughout the skin. It suffers from being too beigy throughout. The start panel is sort of bland in this regard. The text in the start panel is a bit hard on the eyes as it sits on the textured background. You use a dark brown on the toolbar/ menu bars. It might help to use that a a background behind the text in the start panel and switch to a light colored text or something like that. Perhaps the light beige you use on the toolbar mouseovers. Regardless, try to avoid having text on textured backgrounds.
The taskbar seems out of whack. The right side carries all the way past the edge of the screen yet the left side has an end to it.
The scrollbar/buttons should be "raised" to make them stand out a bit more.
Otherwise you have come a long way Baby! Great skin. 
