smax013 is there anything wrong with my version "Windows XP Professional SP3" you need any other info?
Nothing wrong with Windows XP Pro SP3. Just keep in mind that Microsoft's support for it ends next year. So, as time goes by after that date, it will become less and less secure if you have that computer connected to the Internet.
As to burning with Windows XP, if I recall correctly, Windows does not have the ability to "mount" a burnable RW disc as if it were a regular drive. For that, you will need some third party software. It will do typical one time burn operations (I believe it does support multiple sessions, but I could be wrong). I am pretty sure Windows XP allows you to erase an RW disc and reuse it, but it has been a while since I have regularly used Windows XP and even then I generally did not use RW discs.
FWIW, for general backup purposes these days, I tend to suggest using an external hard drive (or two or more...one backup great, but each additional backup provides more redundancy). Unless you have a rathe small amount of data to backup, using optical discs to back up gets time consuming and potentially expensive (if you are backing up frequently). This is potentially even true if you are using Bluray discs. Using a hard drive for backup is generally MUCH easier.
Where I do use optical discs is to make an "archive" copy of some files. A good example are picture files. For most people, they never change/edit their picture files, except for maybe once initially. Thus, DVD+/-R, CD-R or write once Bluray discs are a good candidate for use to create an archive backup copy of image files (I would still advise a redundant backup to an external drive).
In general, optical discs are good for backing up things that you will not need to update or change...aka archiving.