1. First you will need to run this patch before the pre-SR2 CD can be installed. (This file is a zip file that needs to be unzipped and then installed).
2. Install AccuRender 4 from the product CD that you were shipped.
3. Next you will need the AccuRender 4.0 Service Release 2 to enable AutoCAD 2007/2008 support. If you have an early version of AccuRender (Version 4.0.0 or 4.0.1 when you do the command AR4_ABOUT at the AutoCAD command line), download and install the SR2 updater from http://download.mcneel.com/accurender/4.0/sr
Or you can do the command AR4_CHECKFORUPDATES at the AutoCAD command line, which will take you to the download site automatically.
4. Open AutoCAD and type AR4