Security checklist for MS SQL (2005)

I'm looking for a good checklist for security measures to take on a SQL server. The server is in our server-LAN and It contains databases for several different systems. Some are in the DMZ of our ISA-server.  
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guidxAuthor Commented:
I have already done this:

* Remove Built in administrator user from SQL Server
* Create a user with sysadmin priviledge and Disable sa account.
* Grant only the required priviledges for users in your SQL Server..

(got those from another thread)

Raja Jegan RSQL Server DBA & Architect, EE Solution GuideCommented:
>> (got those from another thread)

Seems like my comments in the other thread.. :)
Go through this article for more info.

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