Oh, man, this is a hard one. I finally have a successful installation with the help from several different sources.
1. To begin, follow the steps at:
http://jeanpaulva.com/tag/sharepoint-2010-install-windows-7/
2. To config the IIS settings, see
http://lassewikmark.wordpress.com/2010/07/20/installing-sharepoint-foundation-2010-on-windows-7/
3. To fix the configuration error after installation
http://krunaljani.blogspot.com/2011/10/sharepoint-installation-on-windows-7.html
4. If complaining the web page not found, re-start the WMI service. I had the problem because I just installed the 2nd instance of 2008 R2 with the integrated mode for SSRS for the purpose of this project.
5. I got an error on complaining loopback of the server when I used: http://localhost/reportserver_R2S2 (for my 2nd instance). But when I changed it to: http://CK-PC/reportserver_R2S2, the error message is gone. CK-PC is my PC name.
6. If complaining insufficient permission for the service account on accessing to the database, run SharePoint 2010 Product Configuration Wizard one more time.
7. Now the only remaining open issue is to install and use Report Builder 3.0 when the SharePoint is opened in Chrome. This is also true for report manager opening in Chrome. So it's nothing to do with the SharePoint Foundation setup. If the SharePoint site is opened in IE, Report Builder works fine.
