MS SQL Server 2005 -- Cant Not Attach To AdventureWorks Database

I have MS SQL Server 2005 installed and when trying to connect to AdventureWorks DB





Downloaded AdventureWorksDB.msi file and when trying to attach recieve this error when running script ?



Msg 1813, Level 16, State 2, Line 1

Could not open new database 'AdventureWorks'. CREATE DATABASE is aborted.

Msg 602, Level 21, State 50, Line 1

Could not find row in sysindexes for database ID 8, object ID 1, index ID 1. Run DBCC CHECKTABLE on sysindexes.





Then tried to attach the DB and get this




TITLE: Microsoft SQL Server Management Studio
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Attach database failed for Server 'JKIMBLE1'. (Microsoft.SqlServer.Smo)



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ADDITIONAL INFORMATION:

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)

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Could not find row in sysindexes for database ID 8, object ID 1, index ID 1. Run DBCC CHECKTABLE on sysindexes.
Could not open new database 'AdventureWorks'. CREATE DATABASE is aborted. (Microsoft SQL Server, Error: 602)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=602&LinkId=20476

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BUTTONS:

OK
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Is there a difference between MS SQL Server 2005 and SQL Server 2005 Express Edition