Turbo2,
I think you can do this with a script file easier than lisp. Looks like the text file is almost in the format needed for a script file, but need to have commas between the xyz values. Could use editor to replace spaces with commas, or import text file into Excel, parse points into columns, save as a comma delimited file. Now save with a .scr extension for a script file, add first 2 lines of:
multiple
point
x1,y1,z1
x2,y2,z2
etc.
Then run script file from within AutoCAD.
Voila! (I hope)