As mentioned before, once you open the application, it displays a list of things that it can do for you via a single click!. For instance...
*. Install Gnome 3 in Ubuntu.
*. Fix few theme related issues (to be honest I have no idea what are the "fixes").
*. Flash-issues in 64-bit version (for some reason, the 64-bit of Unity seems to be a bit troublesome).
*. Change the window manager from Compiz to Metacity...
*. Uninstall Gnome3.
*. Install complete codec pack (with a GUI front-end for Compiz, etc).
These are just a few to mention. And to be honest, this little app will come in handy for most of us without a doubt. If you want to install it, then first get the zipped package from here and extract tho content, say... on your desktop.
Then open that folder in Nautilus and look for a file called "yeoworks_ubuntu_solutions_installer.sh" and simply double click on it and "run" it. That's it.
Once installed, you can run it by, right clicking on Nautilus and from the already notoriously not-useful menu chose : "Scripts" -> "yeoworks ubuntu solutions.sh" which should bring you something similar to the shown above. Good luck.