Download this: http://www.mediafire.com/download/qnn5yqn3mpq3btg/my_presets.zip (http://www.mediafire.com/download/qnn5yqn3mpq3btg/my_presets.zip)
All of the preset materials and their folders are contained in that. Just copy over the material file needed in stick it in my_presets > preset_9. And what about the UV lines are you having trouble with? Lining markings up? I'd be glad to help.
Do what Alpha said or go to the 'Recycle bin' icon on your desktop and drag the file you deleted out.~
You can do that with anything that you deleted. (All of the things you deleted show up there)