"Since Office 2000 Microsoft has been using a "Windows in Taskbar" feature with its Office products. A similar feature has been added to AutoCAD 2005 and is nice if you normally only have a couple drawings open at a time. It allows you to quickly switch between open drawings..." read more at the link below
http://www.hyperpics.com/tipsandtricks/cad/taskbar_feature.htm
Cheers,
-Shaan
