servo controller

I'm looking to upgrade a cnc knee mill that I have from an Anilam
Crusader M control to PC based. All I need is to control the motors,
I don't need a cad/cam program. I want to feed it g-code and it
moves. I also need tool length offsets. My servos have tachometers
and the table has linear scales. I would like feed back to the pc
from these scales to assure proper positioning. Machine works --
limited memory and poor interpretation of g-code. Any suggestions to
a kit or something? The servos are good and I think I'd like to keep
them since they seem to be the most expensive part of a retrofit.
I've been told that I just need some geckos and a pc control program,
true? I'm a pretty good DIY'er but not a know it all. Thanks

Shawn
elite_tool@...