Hi, I'm new to this upgrading game and was wondering if I install a second hard drive, will I be able to use it to install programmes and games etc or is it only useful for storing files and backups. I feel that I can probably do the installation part, but I am not sure if I need to install XP on the new drive. I will have it as the slave. I am just not sure how it all works with two drives. Hope this makes sense.