Having jailbroken and unlocked using the Oktoprep / conceited method, I have the Installer and SSH icons on the Springboard, but the iTunes icon is on the far left rather than the far right. Is this unavoidable, or is it possible to hack the Springboard preferences to move this icon to the correct place? I'm quite comfortable with SSH into the file system and modifying plist files, but I'm not sure how to modify the Springboard plist to effectively leave a blank space on the left of the screen, as it looks to me as if it simply reads apps and icons in order.

Any advice gratefully received - thanks in advance.

You can install Customize 1.18 which will allow you to change the order of the icons, so you can move the iTunes store icon to the right instead. Installing Customize will however add this extra icon (Customize one) on your springboard so you will have 4 on the bottom row. But then you can move any icon into any position and make any icon appear and disappear as Customize 1.18 allows you to do so.

You can grab Customize 1.18 from installer. Without Customize and just by editing - i am not sure what to do, so someone more technically minded might have to tell you.