Passing php values to a paypal cart

From: Kev T (nospam_at_c.l.o.n.e.fsnet.co.uk)
Date: 07/30/04 

Date: Fri, 30 Jul 2004 10:56:36 +0100

Hi,

Ok. I have a script which produces output of the form domianname.tld along
with a checkbox.

There may be up to 5 or six of these if the user wants to register more
than one domain. How can I :
1. Restrict the user to only selecting a max of 3
2. Then pass the details into a paypal cart.

I was going to set up another php page with the paypal order buttons for
each item however there are differentcosts depending on the tld. or can I
just pass the php values on submit into a stanfard html page?

It should be simple..I hope.. 

-- 
Kev T