Not sure what you are asking, but with Bluray Burner/Player in a PC, you will need software (PowerDVD14 for example) to read the BR movie, etc. and push it to your screen. You typically need Bluray to play the latest movies in the best HD 1080p resolution. DVD gives less resolution, but can also be played on a BR player along with most other formats. They should be listed on the BR box or instructions.
An old XP machine isn't going to get you much, though. You will also need a good video card, a reasonable amount of ram (2gb-4gb), plus a good processor (CPU). If not, your BR image will most likely stutter and freeze. Unless you have a real need for going through your PC, an external Bluray player is really your best option, and they are getting a lot cheaper. And, if you want 3D, well that's a whole different ballgame in terms of a PC that is required, and 3D Bluray players are pretty cheap as well, but require a specially designed TV or computer screen to work. Since you posted this in a 3D forum, I suspect that is what you are aiming at. I can't begin to describe what you will need for your PC to work, but it would have to be one of the current PCs available and there are different screen types, such as passive-polarized glasses, Nvidia shutter glass-driven, and DLPlink shutter glass-driven frame sequential displays.
As far as burning with Bluray, the discs are more expensive, but getting cheaper and hold a lot more information, and can be used for saving large amounts of data--ie. backing up your PC hard drive, holding photos, etc.
In terms of copying or ripping commercial discs--ie. bluray movies, well that is a copyright infringement and is illegal--and at a minimum requires specialized software that is typically not newbee friendly to use.
Explaining what you are trying to achieve would better help forum members to answer your questions.
Last edited by threed123; 06-27-2014 at 07:32 AM.