For teams that do not have a DVD drive, check at the local Best Buy or Frys or something. DVD drives have gotten cheaper over the years. Right now online I found one for $79.99, but usually if you look over the span of a few ads (two weeks maybe) you are bound find one that is inexpensive that you can use over and over. Also DVDs are great for backing up data so they would be an investment.
Link to Best Buy's Drive