SQL Server 2008 R2 - which is thee correct update to download?

I have a brand new install of SQL Server 2008 R2 on Windows Server 2008 on Dell T710.  After migrating database, and trying to edit existing jobs, I got errors which research indicated could be corrected by installing cumulative updates.  So, I am interested in applying the latest update - which is 9.  The update may be downloaded here:
SQL Update Download list

My question:  Which of these is the one I should download and install?  Why?

...additional detail from the Help>About on SQL Server Management Studio:

Microsoft SQL Server Management Studio        10.50.1600.1
Microsoft Analysis Services Client Tools    10.50.1600.1
Microsoft Data Access Components (MDAC)        6.1.7601.17514
Microsoft MSXML                    3.0 6.0
Microsoft Internet Explorer            8.0.7601.17514
Microsoft .NET Framework            2.0.50727.5446
Operating System                6.1.7601

Who is Participating?
bkielerConnect With a Mentor Commented:
It looks to me like the 5th one from the top is your best bet.

1)  Nothing you've posted indicates that you have a 64-bit machine, so anything with an x64 can be ignored.
2)  The previous items list special SQL services.  For example, the second one lists ReportBuilder.
3)  The 5th one just mentions SQL Server 2008 R2 and is 32-bit.
I can't see the update list, but I think there are 2 cumulative updates available.  The 2nd update should cover everything since the release of SQL 2008 R2, so you won't need the first update.

If that doesn't answer your question, post a screenshot of what you see.

bleonardiAuthor Commented:
screenshot attached

bleonardiAuthor Commented:
I actually do have x64, so then applying same logic it would be 10th one down.  Correct?

What is "ia64"?
bleonardiAuthor Commented:
It was the 10th one down.  Installed very easily.  Thanks for your help.
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