I'm on 1.1.2 FW jailbreaked and unlocked. I watched a few youtube videos on iphone apps and I noticed that people were able to flip pages (where their icons span more than 1 page) on there springboard and arrange icons. What application do I need to install to enable me to do the same with my iphone?

I tried to install summerborad 3.0 but it says package install failed

Please help.