Networks, when they work they are great. But eventually they all go down. Then the problems start, who do you call? Comcast? Verizon? Dell? Linksys? Microsoft? That's 5 phone calls, with an average hold time of 45 minutes it'll take 3 hours to get through the list and you know you'll just have to start over from there.
Or you can call the The PC Handyman and I'll teach you the ropes on networking and how to tell which piece is failing (or if you prefer, I can just fix it and get out of your hair).