Hi!
I haven't found a setting to disable the "rats–nest" display yet, but if you want to email a project, you need a zip–file containing the *.sch, *.pcb, Gerbers if you created them, and the *.ssl, *.psl and the *.cml files associated with the components you made, they're usually in the "Users" Library Folders together with the design files!
Also, if you run the "Manufacturing Outputs" to create gerber files, the holes don't always show in gerber-viewers unless you include the *.mop file!
*.sch – DS Schematic Design, ".pcb – DS PCB Design, *.ssl – DS Schematic Symbol file, *.psl – DS PCB Symbol Footprint, *.cml – DS Component Model File
Chris Williams