Please post this in thread 6820 if you can. I am new and therefore can't post for 3 days.

If you are looking for a USB adapter with an external antenna connector, check out the Edimax EW-7318USg. It is based on the RT2501 chipset (same as D-Link DWL-G122 C1) so you can use the rt73 drivers.

This card is sold under a number of different brands:
Alfa AWUS036S - Sold in DataAlliance store (search eBay for DataAlliance)
Edimax EW-7318USg - Sold worldwide. Search local Amazon or eBay
Hawking HWUG1 - sold in US/Canada. Search Amazon.com
Danets DN-7318USB - Sold in Hong Kong. Search eBay