Please note, that I am no expert on these servers, so don't take my answer as definitive...

Small print over...

I believe the Sun Java servers are now the Oracle HTTP servers. These servers do support PHP and run Apache. Should be trivial to run MySQL on them, so theoretically yes. However, without actually seeing what software is installed and available, I wouldn't wanna guarantee it. The requirements to run C5 are on this site, so my advice would be to go back to your client (or your clients host) with the specs and ask what would be involved to get it running. It may be that they have specific applications running that would get in the way of such a setup...

Does that help at all??

Jon