I agree with what has been said already. Be sure to grab the correct link codes.. and do not just point to any page you want. Talk with each program if they dont have any info about linking codes on their site or directly listed in ccbill.
CCBill allows for programs using their system to run multiple sites under the same program id. This would be the first set of numbers you see in the ccbill link code, CA=. For example:
http://refer.ccbill.com/cgi-bin/clicks.cgi?CA=929024-0000&PA=938997&HTML=http://www.cutekristi.com. The PA= as you already know is your CCbill ID for that program.
Now, if the program has multiple sites you will need to use the &HTML= and the url that the program tells you to use.. you wouldnt want to start promoting a site only to find out later that you are using the wrong code... and not using the &HTML tag may cause an error message, which would mean you wont get any sales!
As for pointing to different pages on a site, it could work but you need to make sure the program you are using has that option enabled... I always ask the sponsor directly if ever I am unsure.
Hope this helps.