I want to install a second OS (Windows XP) and I have already formatted the hard disc so what do I do? "Life is hard without a computer"

you can't install Windows XP directly onto a PS3, the hardware isn't supported. It is possible to run it inside an emulator, but it's not easy to do. Biscuits are good, but keep the crumbs off your keyboard!

How do I run this emulator? "Life is hard without a computer"

you have to install older ubuntu or yellow dog linux or any other power pc supporting os and google for a linux emulator. you will probably get better info on finding the right emulator in the linux forums once you get yellow dog/ubuntu installed on your ps3. once you get it installed and running post how it went. -Michael-

id reccomend keeping your sony OS and installing ubuntu. its been done numerous times, and xp i dont think would like running on a ps3 Beast Desktop Intel Q6600 G0 @ 2.4ghz Evga 680i Evga 8800GTS 640mb/320bit 4096mb corsair 1x 160gb | 1x 500gb 750w corsair psu

Every time I try to load Unbuntu on the ps3, it prompts me to 'insert storage media at the save destination'. -- Yes I'm a rookie, but do I need to insert a specific disk at this point in order to fully download it? Ultimately, I'm trying to install a different OS for my PS3, so any advice is appreciated.

How-To: Install Ubuntu and Linux Apps on Your PlayStation 3-http://www.maximumpc.com/article/howtos/howto_install_ubuntu_and_ubuntu_apps_your_playstation_3