Hi folks,

well, I have to admit, that I'm a bloody n00b according to this whole design thingy and
I'm so sorry to provide mental pain for you by this question, but I greatly appreciate what
you are doing here. It's awesome  

So... ehm... I've just downloaded the visual style 'Vista CG' and am too dumb to implement
it in my windows XP by my own. Help

most likely it's a visual style for Window Blinds XP, try downloading Stardock's Window Blind's XP, that should work. from www.stardock.com

Vista CG is NOT for Windowblinds.  
Have a look here or here or here or here.  
Hope it will help you.  

And welcome on CrystalXP.  

Woohoo, awesome, it worked !
Thaaaaank you !

awesome!

Visual Styles are only made for XP without any external apps like WindowBlinds or StyleXP.  WindowBlinds skins/thems have the extention .wba

Thanks

Correct
But when you're installing 3rd party visual style (not a one developed by Microsoft), your original uxtheme.dll won't allow you to change the theme
therefore, you'll need to patch the .dll
StyleXP and Uxtheme Multipatcher (also Neowin version) are the patches avalable in the net but Style Xp is just not only a patching devise.

If you want, you can use a Visual style (msstyle) in Windowblinds, but first you have to convret that in to a wba using Skin Studio  

Forgot to mention that slight detail...

I use skin studio

Yes and Skin studio is to develop wba skins (theme packs for Windowblinds.
(like I've mentioned earlier )