PHP connection to remote Access database on NT

Here's a question I hoped I'd never have to ask... Is it possible for PHP, running on a Linux/Apache webserver, to connect to an Access database running on a remote NT box? The NT box is a back office server behind a firewall. In a nutshell, the customer wants his website to be able to record on-line sales in his Access-based Point of Sale system. The POS system will be running simultaneously. I haven't done much work with Access, but my impression is that it locks tables and there might be some difficulties sharing write access to the data, but I could be wrong about this. Is there any way Access can be stretched to do this kind of thing? Thanks. -- John