如何将fedora yum源翻译成RHEL？

I use fedora 13 on my laptop, and I use 'yum' to install "recordmydesktop" just for fun.One day, my boss ask me to install "recordmydesktop" into his computer (whose operating system is Redhat Enterprise 5.2). The yum in his computer does not work! I can't I use fedora 13 on my laptop, and I use 'yum' t