Before you install the component, you might want to create an account at the yoflash website. You need a publisher ID in order to download games from the yoflash webpage. THIS IS OPTIONAL! If you do not want to use the games offered on yoflash.com, you can still use the games from FlashGameDistribution (FGD) without registering at any webservice.
At the time of writing around 100 games are located at the yoflash website. These games come from different distribution webpages and are all legal to download, install and play on your web presence.
The installation of the component should be straight forward. Go to your extension menu in the Joomla Administration panel, choose "Upload & Install a Joomla™ Extension". Locate the com_yoflash.zip file on your hard drive and install it. The language files, database tables will be copied for you. Also, a new directory called games will be created in the default images folder. This is where you game files (optionally) and the images of the games will be saved.
After the installation finished make sure to visit the SETTINGS page and press the SAVE-Button and least once.This will write the default configuration into the database. It will also set the default-yoflash-template. Otherwise you will get a lot of errors on the frontend.