Or try this way if using wildpuzzle or dk custom, I couldn't figure out how to use the kitchen but this is another way to get it
http://forum.xda-developers.com/showthread.php?t=912306
This is a theme for wildpuzzle rom which gives you a transparent status bar. I haven't tried the actual aerofire rom but I presume it'll give the same effect as flashing the theme over wildpuzzle.
There's also a theme called glassmod which will work on any sense rom (I think)which gives a transparent bar too.
These themes are only for sense based roms and won't work on cm7 etc.
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