what exactly is a rom for droid?

Im seeing stuff on roms for droidx but what exactly arethey? What are they for and what do they do? I know what roms are when it comes to video games but for droid?

 

link 2 in my sig will help out

 

That's what i was thinking it was. no rooting or roming for my phone. dancedroid

 

You underestimate the power of the dark side. With our combined strength, we can end this destructive conflict and bring order to the galaxy.

 

Root is amazingly easy and awesome. Download Z4 Root and click permanent root. It takes 2 minutes and you can always go back.