Need driver upgrade for old Diamond MP3 player

Question

I hope someone can help me. I have a Diamond 1G MP3 player and I just love it. My son got it for me at Xmas but now I need to find a newer usb driver for it. The disk I have is only for Windows 98 and I now have XP. I can't find an upgrade anywhere, it's like this unit is in the dinosaur age but it still works great. Can anyone direct me to where I might find an upgrade for it? It says diamond on the front, 1G and it's pink! Any help is tremendously appreciated!!!