Ok, got the trade script more or less worked out.
Each team will send to a url with their teamname as a query string and the script witll count the hits coming in and dole out the hits going out accordingly
test of it is at
http://www.bntnews.com/testtrade.html
Should always return a url belonging to a different team..
Need to come up with a way to tag a hit so I know when a hit has been passed between all 4 teams so we can ditch it to a default tade script and pick up a new hit