Bonjour de Montréal, 'colorgreen' :) ... notice that this is your first post so welcome to the board :)
As for your question, go to Roland's site, download and install the GX-24 driver for WinXP and away you go. I see you have Corel so you can cut directly from there; I'm not familiar with the others but I would expect them to work as well.
Step 1: select 'Current Products'
Step 2: bottom of the page, select 'Vinyl Cutters' and choose 'GX-24'
Step 3: select 'GX-24 Windows 2000 / XP Cutter Driver'