How about this...
Say your linkcode for paysitex is this:
http://refer.ccbill.com/cgi-bin/clic...w.paysitex.com
What if 10% of the time, the index page of
http://www.paysitex.com changed their "Enter" link to:
http://refer.ccbill.com/cgi-bin/clic...com/enter.html
Shouldn't this overwrite the original cookie set when the surfer clicked on the link on the affiliate's site?