I've got a client who we've built a WordPress site for on Linux and ported it to their windows server environment. Their "webmaster" doesn't know how to configure their server. I can write to mysql just fine, but when it comes to doing straight forward theme updates that should edit php code directly on the server it appears that the permissions to write through the web interface are not there. Adding to the issue is that we have a separate admin tool that is writing to mysql, but when generating xml from php scripts nothing is writing to the local /xml directory.
Is there a setting in IIS or php that permits writing to local directories?