We did the same thing in my house when I was in Jr. High and High school. I think you can find the stuff at Wal-Mart for less.And in the words of Ferris Bueller, "If you have the means, I highly recommend picking one up." That is, if you have the room, and your dining room is Ping Pong Smashing Proof.
Dining Table Ping Pong
Turn any boring table into the ultimate ping pong match! This full size table tennis set includes everything you need, and you can store it all away in the sturdy metal case.
2 quality full size table tennis paddles
2 ping pong balls
full size net
2 steel posts with padded clamps (to fit all tables)
2 awesome wristbands!
Size - 10 1/2" x 6 1/2" x 2" (case)