RTlinuxInstall

One of the RT extensions that work with EMC is RTLinux.
You can get it from http://www.rtlinux.org.
Currently FSMLabs distributes several version of RTLinux.
Some are comercial versions, but there is a free one called RTLinux-Free.
Before installing RTLinux you might want to read this: http://www.tldp.org/HOWTO/RTLinux-HOWTO.html