Visual LISP, AutoLISP and General Customization

[#1]

I need to make tool which can generate automatic cad files with specific data, Which software i need to learn for making some application

[#2]

Depending on what you want to do and if you want to use AutoCAD or not, you've got some options:

1. With AutoCAD: Make an ObjectARX program in C++ to make .dwgs
http://usa.autodesk.com/adsk/servlet/index?id=773204&siteID=123112

2. Without AutoCAD: Make a program in whatever language to make .dxfs

Regards, Jake
___________________________
http://thatcadguy.blogspot.com/

[#3]

Just LISP or VLISP , also by a SCR file .

And by a hard way , by VBA on excell

[#4]

TopoVlexC is program for building lisp from library zip.
You can create lisp program with generator lisp and functions library
You cad write lisp program more easy ...............
If you are interesting please replay message.
List of functions, from library..
Click to.....................http://discussion.autodesk.com/forums/thread.jspa?threadID=755054&tstart=0
and write your email adress to write url for this program.