TrueTransparency, this free software created by Lefreut that allows you to replace your windows's borders by skins composed with transparent images and give a small Vista look to your XP, you are many to have downloaded it here.  

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Pretty cool site. I like the fact that you can actually "test" TT there.
Thumbs up for the guys (and girls) behind the site..!

Funny how the pngs arent but true 8bit -thereby not being true colorus

now if by meaning true transparency they mean emmualated as vga cant do true -fine

other wise use rgbe -amiga