AutoCad - Error de instalacion, ver setup.txt

Gracias por ver esta nota!!!
Al instalar Autocad 2006 me da error interrumpiendosé y un msaje me sugiere ver el archivo Setup.txt
En el archivo hay:

[3/26/2008 05:34:37] === Installation started on DESKTOP by Administrador ===
[3/26/2008 05:34:48] [Info] Windows Installer upgrade is not required
[3/26/2008 05:34:48] System Version = 3.1.4000.4039
[3/26/2008 05:34:48] Installation skipped: MSI Runtime 3.0
[3/26/2008 05:34:48] [Info] .NET Framework Runtime upgrade is not required
[3/26/2008 05:34:48] System Version = 2.0.50727.1433
[3/26/2008 05:34:48] Installation skipped: .NET Framework Runtime 1.1
[3/26/2008 05:34:48] Installation started: .NET Framework Runtime 1.1 Language Pack
[3/26/2008 05:34:48] Command = "D:ProvisoriaAcadAutoCAD.2006_por_paccoBinAcadFEUIsupportdotnetfxesplangpack.exe" /q:a /c:"inst /qb"
[3/26/2008 05:34:55] [Error: 1603] Error grave durante la instalación.
[3/26/2008 05:34:55] Installation failed: .NET Framework Runtime 1.1 Language Pack
[3/26/2008 05:34:55] Installation aborted
[3/26/2008 05:35:10] === Installation ended ===

Que puedo hacer al respecto? Nuevamente gracias!!!