Windows Vista has a built-in feature for adding transparency in it. But Windows XP does not. Now you can render transparency in all your applications using this cool small application called bLend, by the programmer, Lord Devrexster.
The best part about this application is that you can filter out applications in which you don’t want to have transparent windows. So this can also be used in Vista, because Vista does not give you the option to choose applications for transparent windows. Overall, I found this application good, but there is one little draw back. It’s a resource hog! It eats lots of RAM.