Need discussion board syncronised with classified ads - How?

[AutoilmoituksetCOM]

Hi I would need/like to ad a discussion board to a classified ads site, in such way that people showing interest in an item could ask the seller a question - and the seller could reply.
A bit like eBay although this is not a bidding site. I run currently PHPClassifieds So it could be fairly simple - but the questions and replies have to stay in sync for the classified ad in question. How do I do this? Can someone help? How do I do this?
or..
Anyone knows a classified software that would have this feature "out of the box"?
Runs on Linux server - MySQL - PHP4.


Script URL:
Version of script: PHPClassifieds
Hosting company: http://www.DomainTunnus.com
URL of phpinfo.php:
URL of session_test.php:
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[Klemen]

It's much more work than it sounds and you might be better of having your classfields script modified to accept messages and replies. Try posting a project at Rent A Coder