I'm planning on creating the largest computer program ever devised

[Grall]

Start small, one city at a time, see how far you get. If still too large, try a district. Still no good how about a street?

These are all good suggestions, the OP is now taking volunteers for doing the actual work while he directs the effort, telling everyone what to do...

 

[Simon F]

Ladies and gentlemen i thank you...................

You won't if I hit the ban button