How to Install Debian 8.2 "Jessie" and LinuxCNC2.7

Does LinuxCNC have its own kernel modules?
In other words, does it depend upon particular kernel version, or RT patch is enough?

"uspace" linuxcnc does not use any kernel modules, so it is not dependent on having a specific matching kernel version number like "rtai" linuxcnc is.

Thanks, Grub!
Your tutorial is helpful. I'm not a newbie, but am also not experienced.

I am currently running Wheezy that I installed from the live cd. I've been playing with installing and compiling packages and would like to try an install like yours.

Question... do I need to wipe out my current Wheezy installation first or can I just install Jessie on top of it?

UPDATE: I decided to blow away everything and install over the entire disk. Was dual booting with XP, but now XP is no more! Have installed freecad and teamviewer. Next is linuxcnc!

jepler wrote: "uspace" linuxcnc does not use any kernel modules, so it is not dependent on having a specific matching kernel version number like "rtai" linuxcnc is.

can i install linuxcnc uspace on jessie-amd64 to control machine from parport or it is only for simulation ?

Depends on the hardware, in my experience Preempt-RT has similar latency to RTAI on fast hardware
(Sandy bridge range) and significantly worse latency that RTAI on slow hardware ( Intel Atoms etc )

RTAI linuxcnc will be available for jessie i386 or amd64 ?
repos here are empty
linuxcnc.org/dists/jessie/2.7-rtai/