I recently bought a cd writer, acer, and it came with 4.x software. When I upgraded to windows xp, I found out that they did not, or no longer, supported it, and wanted me to purchase, for 99 dollars, their platinum version, which was the only way I could use it. I already had that product, and found it hard, and very combersom to use, plus, it didn't work real well with xp, even after the updates. Could not rewrite to a cd rw. Tried Nero, and it worked fine. Wanted to try to nti, but ran out of trial time... never did get a chance to try it. Recommendation, DON'T waste your money!!!