You will need to download and install the most recent version of Eiffel Studio 7.0 GPL to work with this project. You can find instructions for this process at www.eiffel.com.
Once you have downloaded and successfully installed Eiffel Studio 7.0 GPL, you will need to download and install the most recent version of Tortoise for Subversion. You will find this link useful: http://tortoisesvn.net/downloads.html. Also, you will want to download the latest Subversion command line client at: http://www.collab.net/downloads/subversion/.
With both the Tortoise and Subversion downloads in place and installed (you will need to reboot), you can then access this source forge project:
https://emsqlex.svn.sourceforge.net/svnroot/emsqlex/
For example: Create a directory for C:\Projects on your local Windows machine. Right click the new Projects directory and select "SVN Checkout" from the quick menu. Tortoise will present a dialog to you asking for the URI above. Enter it and click the Ok button. The eMSQLex project will be downloaded to your C:\Projects directory in a new folder called "emsqlex". You will notice the folder icon will also include a greed circle with white check-mark if your download was successful. If you do not see the check-mark, click back a directory and re-click the Projects folder for the icon to update and appear.
You have now joined the project! However, you do not yet have write or update permissions on any of the project files. All you have as an anonymous user is read-only access. You will need to submit a request through sourceforge to be included as a developer on the project if you will to submit changes back to the project. Otherwise, the code is completely open-source, so feel free to use it and modify it as you like under the GPL license.
Have a super day!