Eudora light version has failed to install on my PC.

Hallo there!
I have been using Microsoft Outlook for my emailing system, but lately I have tried to configure it to work to no avail. I wanted to try out something light and I have Eudora light in mind. My efforts to install Eudora have also failed miserably since the application has refused to install completely on my PC. I keep running it and it just collapses and gives me a message that the program did not install correctly and asks if I would like to install it again. What can I do to resolve this?
