the fact that it tells you the files are missing when you are trying to do an installing from the disk it means the disk you are using is either corrupted or has parts that can not be read..The thing to do is try to do an installation from the windows ..and this way you will succeed (and avoid the possibility if the disk player is the one making problems )
another thing is to try and burn the windows disk again ..Download a image ..and after that use Nero or another tool to burn a boot-able disk ..and use it to install ..
now ..depending on your computer configuration ..you can choose what to install ..but if you want you can even install windows 7 if it supports it ..for that you need more than 1G cpu and 1g of ram on your computer and at least 20 G free in C drive .(remember this drive need to be formatted so all files will need to be moved if you want to keep something )
here are some images I used with success .. http://thepiratebay.org/torrent/6887809/Microsoft.Windows.XP.Professional.DECEMBER.2011
or windows 7 http://thepiratebay.org/torrent/6839618/windows_7
for this you will need the loader if it is not in the folder ..(search on same site )
for to be able to download these images..you need a torrent client program ..and I would go for this one ..http://www.utorrent.com/
to download..just install u torrent ..and after that go to the page ..and click download this torrent (ignore the big download button case it is a spam )
it will start in utorrent my default ..and when it is all downloaded..you can use Nero and burn the image to the disk ..to do that ..just install Nero ..and double click on the image ..and will open Nero automatically ..
for windows 7 ..you can even try a tool to load it on a memory stick and install it from there by pressing the key for boot menu on start ..and after that choose to boot from the usb ..(or if the boot do not work ..just start the installing from the usb flash directly in windows.
here is the tool I mentioned..http://download.cnet.com/Windows-7-USB-DVD-Download-Tool/3000-18513_4-10972600.html
if you try to use this tool in windows xp ..you will need to install a couple of fixes ..cause it is made for windows 7 ..but they are available on teh net and the program leads you to them automatically ..
and the tool works cause I use it like this all the time ..and it can also make a boot-able disk or a boot-able usb ..your choice ..
let me know if you have additional problems and please rate my answer..to help my activity here ..