the easiest way to do this is to create 3 blank app icons (dummy apps) and then just put the icon you actually want there. The icon you want to see will be a huge one and only the actual spot on the icon where it is on the springboard grid would open the app.
You can get it so that anywhere on the spot would open it but it would be quite a bit of extra work, and wouldnt really save much.
http://www.modmyi.com/forums/showpos...1&postcount=15
this is an example of what i am talking about on how to do it with blank apps. you would just put 3 blank apps per row and the 1 icon that is large enough to cover the entire row. It is a centered icon so your large icon will have to be offset so that when it centers it looks like it is actually centered, whereas a part of it will be off screen.
