Adding Sablotron support to Red Hat 9

I'm trying to add Sablotron XSLT support to PHP on Red Hat 9. Normally, this means recompiling with additional flags '--enable-xslt', etc. However, I don't want to replace the rpm installation of PHP with a tarball version. I have thought of building a new rpm with xslt support, but don't know much about it. There's a SPEC file in the PHP download, but it's only a skeleton version, and I couldn't get it to work even in that form. I notice that there are additional ini files under /etc/php.d. These appear to be for loading modules for extensions like MySQL and LDAP. I was wondering if I could make create one to load Sablotron. However, I haven't had any success. So could anyone suggest a way of adding Sablotron support that retains the rpm installation? -- Rohan Parkes Melbourne Australia