.net framework 1.1问题 安装AutoCAD2006时出现的

安装AutoCAD 2006时出现错误，如下：
[10/28/2006 12:18:10] === Installation started on 517-91024192601 by amwater ===
[10/28/2006 12:18:12] [Info] Windows Installer upgrade is not required
[10/28/2006 12:18:12] System Version = 3.0.3790.2180
[10/28/2006 12:18:12] Installation skipped: MSI Runtime 3.0
[10/28/2006 12:18:12] Installation started: .NET Framework Runtime 1.1
[10/28/2006 12:18:12] Command = "G:\Bin\AcadFEUI\support\dotnetfx\dotnetfx.exe" /q /c:"install /l /qb"
[10/28/2006 12:19:59] [Error: 1603] 安装时发生严重错误
[10/28/2006 12:19:59] Installation failed: .NET Framework Runtime 1.1
[10/28/2006 12:19:59] Installation aborted
[10/28/2006 12:21:21] === Installation ended ===

我以为是要安装.net framework 1.1
于是在官方网站下载了一个，名为dotnetfx大概23M，

安插装时又出现如下错误：
错误1935
An error occurred during the installation of assembly
‘Microsoft_VsaVb,Version=“7.0.5000.0”,PublicKeyToken=“b03f5f7f1

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