Update Linq .dbml schema in VS2008

Hello,
I am trying to update the Linq schema within VS2008 - when I make changes to the underlying Sql database. I have tried using SqlMetal but if I replace the existing .dbml file in my project with the SqlMetal .dbml file I get an error pointing to the layout file. If I delete the layout file, I am then able to open the new .dbml in VS file but there is no longer a valid datacontext - there all code that was depending on this Linq datacontext fails regardless if I rebuild the solution.

Here is the current SqlMetal command line (which seems to work fine?):
sqlmetal.exe /conn:"server='itsa1'; database='myinsbusiness'; user='admin'; password='password'" /dbml:"C:\Program Files\MyInsBusinessFetch\SqlData\MyInsBusiness_LinqDB.dbml" /sprocs /views

So my question is how do rebuild my .dbml to use within VS2008?
jheringtonAsked:
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naspinskiCommented:
You can use SQLMetal.exe to generate your dbml and or cs/vb file. Use a pre-build script to start it and target the directory where your datacontext project belongs.

C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bin\x64\sqlmetal.exe
  /server:<SERVER>
  /database:<database>
  /code:"path\Solution\DataContextProject\dbContext.cs"
  /language:csharp
  /namespace:<your namespace>

I stole it from here: http://stackoverflow.com/questions/40022/best-way-to-update-linq-to-sql-classes-after-database-schema-change#40034
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jheringtonAuthor Commented:
Thank you. The link lead me to several other links that should prove to be very helpful. I am still somewhat confused...would the dbContext.cs file in your example in effect replace the dbml, layout and designer files?
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Ady FootSharePoint ConsultantCommented:
Can anyone help me further with this?  I'm unsure how to use the sqlmetal application as naspinski has shown.  I too tried to use it as jherington and experienced the same result.

Regards,

Ady
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