I bought this item primarily to upgrade from onboard sound, which doesn't support 3D or EAX features. IT was the only item in the box, but I wasn't surprised since it's OEM. I originally installed it on Vista Home Premium 32-bit. No driver CD came with it and the drivers from Creative's website DO NOT work. The program says no supported products can be found on your system. Eight hours of searching for drivers was enough to piss me off. I was finally able to use some from one of Gateway's installation programs, which was about 450 MB. I then proceeded to downgrade my OS from Vista to XP Media Center Edition 2005, because it has more networking support. I tried the method I originally used, the drivers from Gateway's site. It didn't work. I tried to manually add drivers through the Add Hardware Wizard from both an install CD ISO image and an extracted version of Creative's setup program. Device manager recognizes it as Sound Blaster X-Fi Xtreme Audio, which is great; except it gets a code 10 error (cannot start). I am 95% sure I won't be able to get this to work with XP and am thinking about returning it, either to purchase an X-Fi Xtreme Gamer card or just settle for insufficient onboard audio. In short, be wary of buying this product. The only way to really know if it may work is if it comes with an OEM driver CD (mine didn't, so I am not 100% sure on this). If it doesn't come with a CD and you have XP, just send it back. Don't bother. If you have Vista, you might be able to scrape some OEM drivers from the installation programs of other name brand companies, i.e. Dell, HP, or Gateway.