You'll be better off asking this question on the AutoCAD NG. My approach
would have been to output the points as a text file with one coordinate per
Then a simple AutoLISP program can read this text file into AutoCAD and
create points or connect these points with a polyline - whatever you want.
You can make AutoLISP read a CSV file, which is one of the standard EXCEL
export formats, but for a casual AutoLISP dabbler it will be faster to spend
time on simplifying the point file than on writing a more complex CSV import