1. I am trying to run
sp_attach_db @dbname=N'TheBeerHouse' from Readme file

2. and I am getting this message:
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Msg 1813, Level 16, State 2, Line 1
Could not open new database 'TheBeerHouse'. CREATE DATABASE is aborted.
Msg 602, Level 21, State 50, Line 1
Could not find row in sysindexes for database ID 9, object ID 1, index ID 1. Run DBCC CHECKTABLE on sysindexes.
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3. If I am creating TheBeerHouse database, I am getting this message:
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Msg 1801, Level 16, State 3, Line 1
Database 'TheBeerHouse' already exists.
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Could you, please, help me with this problem?

What problem - it's already there? Are you using SQL Express, or full SQL? If you have SQL Express you don't have to attach it unless you want to use it from non-ASP.NET apps.

I'd run "DBCC CHECKTABLE" if I were you. This can fix possible damage.

Did you try to "use" TheBeerHouse and do some queries?

By the way, this is the forum for the first edition. There's a forum for the 2nd edition here:
http://p2p.wrox.com/forum.asp?FORUM_ID=261

Eric