Ive started developing a super lite theme for my N80 , my goal is to make a theme that uses the least amount of memory (ram). so far Ive managed to free up about 3 - 4 megs by having this lite weight...

use SISXplorer or SISexplorer , you can extract all the files contained in the .sisx or .sis file.
go to symbian-toys.com or do a search on google.