Change the file size of a photo?

I am trying to send a photo for a contest, and they want the minimum file size to be 4 MB. My photos go into iphoto as 5.2 mb files, but when i crop them to 4x6 size the file size changes to 2.2 mb. i am taking pics at the highest jpeg quality in the camera (an Olympus e500.) Is there a way to increase that file size again, or should I be doing something different. I don't have the original photo--it is on a cd. Should I be saving both the original and the edited photos on cd's? thanks

Hi again!
It all depends on how many megapixels your camera has to work with. If you have a 5 megapixels camera or higher you should be ok with cropping down. I would probably do as much cropping as I could in Preview instead of iPhoto. But I just don't think you can crop to set dimensions in Previews
I would seriously think about downloading something like Graphic Converter: http://www.lemkesoft.com/ - it's a shareware and free to download and try. It may take you awhile to figure everything out, but it's a very very good image editing software. You can do exactly what you needed to do with your project using GC and a tons more... hope you do well with your photo projects!
Rick
iMac G5 iSight 20" - 30G iPOD & Hot Pink Nano 4G - WD 500G FW -   Mac OS X (10.4.8)   - HP Pav 15" WS and Toshiba Sat 17" WS LP's - Canon 20D & A620 Kodak P880

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