Points for originality (sorta) but I don't like his antennas. I think he mixed too many designs in implementation. Also, I doubt that a 75-ohm VGA connector pair is the best match for RF at 50-ohm and 2.4GHz... VGA may see 500KHz for a single pair, but I doubt in excess of 5MHz tops. I'll have to look at the specs for HD15 and RS232 and see what the connectors can take. There's a reason the 13W3 uses three coax cables...

On the plus side, you can get a .5W amp from Hong Kong that does a/b/g :)

Homemade Laptop Wi-Fi Amplifier Review