First some advice on posting. Please do not use ALL CAPITALS, as that means you are shouting!
If you can put the ISO CD in your drive, turn on the PC and it boots, then once it has booted up you should find an icon on the desktop to run the Installer.
I don't know much about Vixta, but they have their own forums - http://sourceforge.net/forum/?group_id=206087
Linux XP isn't a Live CD if I remember, so you put it in the drive, reboot the PC, and it gives you a menu. Choose Install and see what happens. It should ask you some basic questions to set your location and language, then detect your hard drives. When it asks you about partitioning you need to make some space on the drive for it. I can't remember how this bit works, but it was quite easy. You will need one partition of about 5Gb for the system, plus one partition of 2 times your RAM, though I have found that for a normal desktop or laptop a max of 1Gb is enough. Once you get to that point it will continue and take from 30 to 60 mins depending on your hardware.
I couldn't find a Linux XP forum, but there are a lot of reviews listed on Google.