AutoCAD ScriptPro has updated for AutoCAD 2010 32bit and released for free download at http://www.autodesk.com/migrationtools
Select > Autodesk Customization Conversion Tools
ScriptPro takes AutoCAD scripting to a new level with an easy-to-use interface, logging, reusable project files, enhanced scripting with new keywords and utilities, and robust error recovery. Using ScriptPro, you can apply a set of commands to multiple drawings by simply specifying a script file and the list of drawings that you would like to apply the script to.
ScriptPro is a VB based application and as such is only released for 32bit.