Autodesk User Group International has posted a nice article of tips on AutoCAD Switches written by and AutoCAD Guru and also one of the most experienced and feedback providing AutoCAD customers Lee Ambrosius.
Lee also has a blog for many great tips on AutoCAD titled "Beyond the UI".
http://hyperpics.blogs.com/beyond_the_ui/
"Last month, I finished the second installment of using and creating scripts for use with AutoCAD and AutoCAD LT. Here, I’ll turn the attention from customizing inside of AutoCAD and AutoCAD LT to the desktop shortcut. There are many options to get AutoCAD or AutoCAD LT start up. You have seen one of these options or switches in the previous articles about scripts. That switch was the /b switch, which allowed for the loading of a script when the desktop shortcut was used. This article investigates the many other switches available to you." Read More
