求高人指点，win7下安装sql2008！！！！
我的系统是win7，32位，安装sql2008的时候老是报错。

Overall summary:
  Final result: SQL Server 安装失败。若要继续操作，请调查失败原因，更正问题，卸载 SQL Server，然后重新运行 SQL Server 安装程序。
  Exit code (Decimal): -2068643839
  Exit facility code: 1203
  Exit error code: 1
  Exit message: SQL Server 安装失败。若要继续操作，请调查失败原因，更正问题，卸载 SQL Server，然后重新运行 SQL Server 安装程序。
  Start time: 2011-07-17 00:34:36
  End time: 2011-07-17 01:00:04
  Requested action: Install
  Log with failure: C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20110717_003406\Detail.txt
  Exception help link: http%3a%2f%2fgo.microsoft.com%2ffwlink%3fLinkId%3d20476%26ProdName%3dMicrosoft%2bSQL%2bServer%26EvtSrc%3dsetup.rll%26EvtID%3d50000%26ProdVer%3d10.0.1600.22%26EvtType%3d0x5D9A8C61

Machine Properties:
  Machine name: PANCHAO
  Machine processor count: 4
  OS version: Windows Vista
  OS service pack: Service Pack 1
  OS region: 中华人民共和国
  OS language: 中文(中华人民共和国)
  OS architecture: x86
  Process architecture: 32 位
  OS clustered: 否

Product features discovered:
  Product Instance Instance ID Feature Language Edition Version Clustered 
  Sql Server 2008 SQLEXPRESS MSSQL10.SQLEXPRESS 数据库引擎服务 1033 Express Edition 10.1.2531.0 否  
  Sql Server 2008 SQLEXPRESS MSSQL10.SQLEXPRESS 数据库引擎服务 2052 Express Edition 10.1.2531.0 否  
  Sql Server 2008 SQLEXPRESS MSSQL10.SQLEXPRESS SQL Server 复制 1033 Express Edition 10.1.2531.0 否  
  Sql Server 2008 SQLEXPRESS MSSQL10.SQLEXPRESS SQL Server 复制 2052 Express Edition 10.1.2531.0 否  

Package properties:
  Description: SQL Server Database Services 2008
  SQLProductFamilyCode: {628F8F38-600E-493D-9946-F4178F20A8A9}
  ProductName: SQL2008
  Type: RTM
  Version: 10
  SPLevel: 0
  Installation location: N:\x86\setup\
  Installation edition: ENTERPRISE

用户输入设置:
  ACTION: Install
  ADDCURRENTUSERASSQLADMIN: False
  AGTSVCACCOUNT: NT AUTHORITY\NETWORK SERVICE
  AGTSVCPASSWORD: *****
  AGTSVCSTARTUPTYPE: Manual
  ASBACKUPDIR: C:\Program Files\Microsoft SQL Server\MSAS10.MSSQLSERVER\OLAP\Backup
  ASCOLLATION: Chinese_PRC_CI_AS
  ASCONFIGDIR: C:\Program Files\Microsoft SQL Server\MSAS10.MSSQLSERVER\OLAP\Config
  ASDATADIR: C:\Program Files\Microsoft SQL Server\MSAS10.MSSQLSERVER\OLAP\Data
  ASDOMAINGROUP: <空>
  ASLOGDIR: C:\Program Files\Microsoft SQL Server\MSAS10.MSSQLSERVER\OLAP\Log
  ASPROVIDERMSOLAP: 1
  ASSVCACCO