Those are the common issue with the installation of Talend Data Preparation Free Desktop (Data Prep for short) on Windows, and how to solve them:
Windows version: we support from Windows 7 but it must be in 64 bits. We don't support 32 bit Windows sorry! (ok granted, I didn't really solve this one...)
The installer won't start: we ship Data Prep as a standard self-executable Microsoft Windows Installer. We found out the security policy in some enterprise may stop the installer from starting. Not a problem: use the zip installer instead; see below.
The installer starts but it prompt you for local administrator privileges, and you don't have them, and nobody from IT will help. Not a problem either: the zip install is your friend.
All right, so zip installer to the rescue. It's easy, follow those steps:
Go back to the download page http://www.talend.com/download/talend-open-studio#
Scroll down all the way down to the end until you get to the "other releases" table
These are actually _variants_ of the same release. The last line of the table should list a file like "Talend-DataPreparation-Free-Desktop-windows-1.0.z
Unzip this zip file anywhere you like.
The application is inside: just double click on the .exe -- and you are all set!
If it still doesn't work for you, let us know on firstname.lastname@example.org