Hi Matt,
I think that the chart
Visual Studio 2005 Product Line Overview
http://msdn.microsoft.com/vstudio/products/compare/default.aspx
means that VS 2005 Standard only supports ClickOnce deployment while the
Professional edition supports all kind of deployment options. For me that
means that VS 2005 Standard does not support setup projects (MSI-based) but
I could be wrong.
ClickOnce and Windows installer (MSI) deployment are not the same. You can
learn more about ClickOnce in this section of my web site (take a look
specially at the article "Choosing Between ClickOnce and Windows
Installer."):
Resources about ClickOnce
http://www.mztools.com/resources_net_developers.htm#ClickOnce
Finally, since the deployment options are the same for the Express edition
and the Standard edition (only ClickOnce), what you can do is to download
the Express Edition (free), test it, and see what you are missing.

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Best regards,
Carlos J. Quintero
MZ-Tools: Productivity add-ins for Visual Studio
You can code, design and document much faster:
http://www.mztools.com
> In trying to decide between buying VS2005 standard or pro, I have found
> that
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>
> Thanks for and advice.