Unexpected Fail Error Message When Install SQL Server

I have Visual Web Developer worked on my computer, but I can't make SQL Server work for data-driven. I have uninstalled and install VWD from http://msdn.microsoft.com/vstudio/express/downloads/default.aspx , the same Error message...... "..unexpected fail to install SQL server...", the copy of Summary.txt as below:

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Microsoft SQL Server 2005 Setup beginning at Sat Jul 28 06:54:25 2007
Process ID : 3324
c:8845baf7ee339eaf6setup.exe Version: 2005.90.3042.0
Running: LoadResourcesAction at: 2007/6/28 6:54:24
Complete: LoadResourcesAction at: 2007/6/28 6:54:24, returned true
Running: ParseBootstrapOptionsAction at: 2007/6/28 6:54:24
Loaded DLL:c:8845baf7ee339eaf6xmlrw.dll Version:2.0.3609.0
Complete: ParseBootstrapOptionsAction at: 2007/6/28 6:54:25, returned false
Error: Action "ParseBootstrapOptionsAction" failed during execution. Error information reported during run:
Could not parse command line due to datastore exception.
Source File Name: utillibpersisthelpers.cpp
Compiler Timestamp: Wed Jun 14 16:30:14 2006
Function Name: writeEncryptedString
Source Line Number: 124
----------------------------------------------------------
writeEncryptedString() failed
Source File Name: utillibpersisthelpers.cpp
Compiler Timestamp: Wed Jun 14 16:30:14 2006
Function Name: writeEncryptedString
Source Line Number: 123
----------------------------------------------------------
Error Code: -2146893813
Windows Error Text: Key not valid for use in specified state.

Source File Name: cryptohelpercryptsameusersamemachine.cpp
Compiler Timestamp: Wed Jun 14 16:28:04 2006
Function Name: sqls::CryptSameUserSameMachine:rotectData
Source Line Number: 50

2148073483
Could not skip Component update due to datastore exception.
Source File Name: datastorecachedpropertycollection.cpp
Compiler Timestamp: Wed Jun 14 16:27:59 2006
Function Name: CachedPropertyCollection::findProperty
Source Line Number: 130
----------------------------------------------------------
Failed to find property "InstallMediaPath" {"SetupBootstrapOptionsScope", "", "3324"} in cache
Source File Name: datastorepropertycollection.cpp
Compiler Timestamp: Wed Jun 14 16:28:01 2006
Function Name: SetupBootstrapOptionsScope.InstallMediaPath
Source Line Number: 44
----------------------------------------------------------
No collector registered for scope: "SetupBootstrapOptionsScope"
Running: ValidateWinNTAction at: 2007/6/28 6:54:25
Complete: ValidateWinNTAction at: 2007/6/28 6:54:25, returned true
Running: ValidateMinOSAction at: 2007/6/28 6:54:25
Complete: ValidateMinOSAction at: 2007/6/28 6:54:25, returned true
Running: PerformSCCAction at: 2007/6/28 6:54:25
Complete: PerformSCCAction at: 2007/6/28 6:54:25, returned true
Running: ActivateLoggingAction at: 2007/6/28 6:54:25
Error: Action "ActivateLoggingAction" threw an exception during execution. Error information reported during run:
Datastore exception while trying to write logging properties.
Source File Name: datastorecachedpropertycollection.cpp
Compiler Timestamp: Wed Jun 14 16:27:59 2006
Function Name: CachedPropertyCollection::findProperty
Source Line Number: 130
----------------------------------------------------------
Failed to find property "primaryLogFiles" {"SetupStateScope", "", ""} in cache
Source File Name: datastorepropertycollection.cpp
Compiler Timestamp: Wed Jun 14 16:28:01 2006
Function Name: SetupStateScope.primaryLogFiles
Source Line Number: 44
----------------------------------------------------------
No collector registered for scope: "SetupStateScope"
00D5CFC0Unable to proceed with setup, there was a command line parsing error. : 2
Error Code: 0x80070002 (2)
Windows Error Text: The system cannot find the file specified.

Source File Name: datastorepropertycollection.cpp
Compiler Timestamp: Wed Jun 14 16:28:01 2006
Function Name: SetupBootstrapOptionsScope.InstallMediaPath
Source Line Number: 44

Class not registered.
Failed to create CAB file due to datastore exception
Source File Name: datastorecachedpropertycollection.cpp
Compiler Timestamp: Wed Jun 14 16:27:59 2006
Function Name: CachedPropertyCollection::findProperty
Source Line Number: 130
----------------------------------------------------------
Failed to find property "HostSetup" {"SetupBootstrapOptionsScope", "", "3324"} in cache
Source File Name: datastorepropertycollection.cpp
Compiler Timestamp: Wed Jun 14 16:28:01 2006
Function Name: SetupBootstrapOptionsScope.HostSetup
Source Line Number: 44
----------------------------------------------------------
No collector registered for scope: "SetupBootstrapOptionsScope"
Message pump returning: 2