DOWNGRADING VISTA to XP PRO help please?

Hello,

Okay So I have Vista Home Basic and I want to downgrade to XP Pro. I need to know what I need to do before and after installation. Backing up some stuff is a must and reformatting my hard drive is a must as well. So yeah, like what drivers will I need to re-get and what stuff won't work on my computer besides sound? My sound already doesn't work on vista, because one day I turn on my laptop and it randomly stopped working, says no audio output device is installed.....anyways So I'm think going to to XP could fix this after I get the xp sound driver for it. What are the benefits of downgrading and what are the consequences and what can I do about them?

One benefit is obviously performance I know XP performs better and I'm more used to XP as well.


I have an Acer Aspire 4330, with a 120GB SATA HDD.


Any help with your knowledge is greatly appreciated. Thank you.