Source for Mill/Drill Ball screws

Hi,

My first post here and hopefully will have many more in the future.
But for now I need some info: Good sources of "affordable" ball lead
screws.

I have a Jet mill/drill - looks exactly like all those China clone
machines on the market. I have been 'sitting' on a Centroid CNC 3
controller since 1988 waiting to connect it to a mill (long story) and
now is the time.

I'm sure somewhere in the archives of this group is the info I need
but my dialup connection isn't very time efficient for doing detailed
searches. Can someone please post a list of suppliers known to have
RTI (ready to install) ball screw kits for my style of mill? I'd
really appreciate the help.

TIA,
SMP