i keep trying to make the new image file i am creating at least the same size as the modified image file I presently have, yet everytime I use 7zip to zip the file to image.7z it creates it larger. I even checked to see how big the original image folder was when I purchased the unit and it is larger than the modifed one I created. Is there a reason why it compresses it so large. Is there a setting that I am not doing?

i have created a whole new image file, but i am having trouble keeping the size of the file small. is there anything i can do to decrease the size of the files? any help or suggestions would be appreciated. I have tried using ipaq image explorer to convert the bmp's to the avic pics but when i install the file on the avic, the buttons are blank. Is there something i am doing wrong? please help as i spent weeks creating these images and would hate to scrap the whole thing.