It provides Windows NT4.0/2000/XP/2003/Vista/2008 with full access to Linux Ext2 volumes (read access and write access).

Worked for me on Windows 7 (7100). I’m a bit green using W7 so I’m probably taking the long way here…
* Right click on the setup file, select ‘Troubleshoot compatibility’
* Troubleshoot program, Next
* This program worked in earlier versions of Windows…, Next
* Choose Windows Vista (Service Pack 2), Next
* Start the program
* Abort the set up once it starts.
* Click Next on the Program Compatibility and then choose ‘Yes, save these settings for this program’.
Now, with the ext2/3 drive attached to your computer (I was using a 1TB USB drive with one of the 2 partitions being ext3), right-click on the setup file and choose ‘Run as administrator’. Go through the setup and you will eventually get the choice to assign a drive letter to the drive/partition.