Cat5 cabling

One thing that I'm regretting not doing as part of my upgrades is the Cat5 networking. Originally, I was going to do everything via WiFi but now I want to set up a media centre PC and a server/NAS so that I can stream music, videos, etc around the house. Would have been nice to have the stability of a Cat5 cable. I'll try running the cables myself. Maybe I'll be able to sneak into my house one night before they put up the drywall. Or maybe I'll catch the guy who is doing the wiring and slip him a little cash to do it for me. hehehe...