Joe,
I went to the Trimble website and they don't make the Scout anymore. They do
make some good equipment. If the antenna is a low cost one, I'd recommend
buying one from eBay.
If it is a precision antenna (costing several hundred dollars) I'd be
willing to repair the thing for you for free. I need to see pictures of the
case, a model number and a picture of the connector to see if it is
repairable.
http://www.trimble.com/gpsbc_bullet3.shtml
Is your antenna active? Does it have a built in ampifier?
http://www.thegpsstore.com/Antennas-Mounts-C41.aspx
http://www.antenex.com/index051206.htm
http://www.linxtechnologies.com/Products/Antennas/GPS/