To install SQL Server 2008 plus SP1 on Win 7 machines, you have the following options:
1) install the deployment (runtime only - no management tools) version with SP1 built in
2) install the pre-SP1 version (with tools), then upgrade to SP1 (either by downloading SP1, or running windows update -- in either case a 262 MB download, because SP1 is for all editions of SQL server, not just the express edition)
Discussed in this article: social.msdn.microsoft.com/Forums/en-US/sqlexpress/thread/6b31a657-fe8a-4d72-a82f-b795f8b1daa3
"Microsoft Update experience far superior to having to run through the installer (again) and recomend using this approach rather than downloading and running the SP manually."
...except that is 262 MB a pop.
3) I then found a SP1 download here: http://blogs.msdn.com/b/sqlexpress/archive/2009/05/14/installing-sql-server-express-on-windows-7-release-candidate.aspx
Does SQL Server Express 2008 R2 eliminate the need for this process?