关于AO开发的问题，牛人帮忙解答一下

<P>看ao的帮助，在developer scenarios那一篇里开头有一段如下，说是在.net2003环境开发下添加引用：</P>
<P>Reference ESRI libraries in your project
To program using ArcObjects, you will need to add references to the ESRI libraries.
1. In the Solution Explorer, right-click References and click Add
References.
2. In the Add Reference dialog box, click the .NET tab, then
double-click the following assemblies:
&#8226; ESRI.ArcGIS.ArcMapUI
&#8226; ESRI.ArcGIS.Carto
&#8226; ESRI.ArcGIS.Framework
&#8226; ESRI.ArcGIS.SystemUI
&#8226; ESRI.ArcGIS.Utility
&#8226; System.Drawing.dll
3. Click OK to close the dialog box and add the libraries to your
solution.</P>
<P>可是我怎么也找不到上面列的项目，各位高手帮忙解决一下。</P>

ArcGISDesktopDevKit90sp2.msp补丁一下好了。