Question: Clean install of Windows Vista

[BLUCanadian]

Hey guys,
Im planning on wiping my laptop clean and re-installing Windows Vista.
I have a sony vaio laptop that has been a little sluggish lately and I hope this will help a bit.
As far as I can tell, all that is required is for me to back-up my important data and then pop in the installation disc and proceed with the installation which will wipe clean my current installation and re-install. Is this the correct way to do this? Will I have any problems with my laptop accessories not working (such as the mouse pad, speakers or usb drives??)
I basically want everything gone besides a minty fresh copy of windows... hopefully this will not include all the crap sony originally threw on the machine!!
Thanks!