Posted 15 January 2009 - 05:21 PM
All you have to do is put the first cd in the drive and boot off it, but there are a couple of issues
1. This sort of restore is likely to wipe the drive and put everything back on it as new, so everything you have installed since then will need to be reinstalled.
2. This also usually wipes the data as well (including but not limited to your email, documents, pictures, save games music etc.)
3. Check to make sure the cd's are readable because not being able to use one mid restore would make life very difficult.
I have found that the common cause for pc slowness is usually caused by malware, or the programs that guard against it like av programs, and you might find that after reinstalling and doing all the update that the system slows down again, but this is all guesswork as we know nothing about your pc.
Do you know your pc specs, what av you are running, how much memory, what operating system etc, as it might be easier to fix the slowness issue.