Synopsis:     This week Mark and Shawn are joined by Michael McKean and Elaine Robinette of CDI Computer Dealers to talk about how refurbished computer equipment can be a tightwad's best friend. Sponsor: Power PTC   Use the discount code "tightwad" and get 20% off at checkout. Links: CDI Computer Dealers TIPS:   Tech Tip of the Week: ITSamples.com   Teacher Tip of the Week: Skype in the Classroom