I think that you should be able to right-click on an .shx file and select "Open With" » "Choose default program..." from the menu. There should be a checkbox in the following dialog box "Always use the selected program to open this kind of file". Check it and set it to open in Notepad. Then it won't launch in AutoCAD anymore. I'm on Windows 7.
Corey D. ────────────────────────────────────────────────────────────────────── ⁞|⁞ Please use .Accept as Solution and Give Kudos as appropriate to further enhance these forums. Thank you!