Hi Mason,

I understand that you don't want to use any other alternative as Picasa is a free photo management program from Google that can be used to organize and manage all of the images you have stored on your hard drive. In addition to allowing you to manage your photos, Picasa allows you to perform basic edits and gives you many options for sharing those pictures with others.

The first thing you should do is to check your file system for Picasa.ini files (just activate show hidden items in Windows).
If these Picasa-files still are there, you should be able just to reinstall Picasa and it should start with all the settings you made earlier.
Picasa itself doesn't remove the .ini files.

Then to install Picasa, you just need to download the installer from the Picasa website and follow the prompts from the wizard to go through the installation steps.
The first time you launch Picasa it will ask you what folders you want to scan for pictures that will be added to your Picasa library.
You can change your selected folders at any time by choosing Tools ->Folder Manager.

If you want to tell Picasa not to scan a folder, select “Remove from Picasa”.
You can also select a folder and tell Picasa “Watch for Changes.”
That means that any time you add pictures to that folder, Picasa will update its library. If you choose “Scan Once”, Picasa will scan the folder and include it in its library, but it will not update it if you add new pictures to it outside of Picasa.

I hope this helps in getting Picassa installed on your Windows machine.

Regards,
Lokesh