How can you program a 2006 Chevy Cobalt remote keyless system manually from home?

[mehereintheeast]

Can a 2006 Chevy Cobalt remote keyless system be manually programmed/reprogrammed from home or must it be taken to a dealership? I know some cars have a method to program a remote entry system yourself. Does anyone know how to do this for the 06 Cobalt or know a website where I can find instructions?