Setting up LinuxCNC (Linux newbe)

Good day all.

I am still having problems with my CNC router/mill from time to time.

I tried running the computer with windows 7 & mach3, but I had no end of problems, see my post here: DPC spikes stalling stepper motors.

I then wiped the system clean and installed windows xp home sp3, once again with mach3, I don't get the problems like I did with windows 7, but now and then I seem to lose a few steps or the motor stall.

The stange thing is one day I can be using the CNC for hours on end and not a problem, and another day just misses a few steps, and another day I could have no end of problems.

So before this computer go's flying out of a open or closed window, I tought it would be a good idea to try again with LinuxCNC.

Today I have done a full wipe of the hard drive, installed Windows XP home SP3 and Mach3 again, then installed Ubuntu 10.04 & LinuxCNC via the liveCD.

I now have a duel boot system. Windows and Linux.

Now here is where my problem starts, I have always been a Windows user, and not done much with linux in the past, besides a few terminal commands.
And as such I don't know how to fully setup LinuxCNC.

I know that LinuxCNC can support multiple printer ports, I am just using two ports, Port1 is used just for the stepper drivers, and port2 is for the home/limit switches.

I think I have eveything setup right regarding port1 for the stepper drivers, but I just don't have a clue how I go about setting up port2 for the home/limit switches.

Can someone who has used LinuxCNC please advice me?

Thanks for your time.

Best Regards.