Using some internet sources exactly from http://onemansblog.com/2007/01/08/creative-zen-vision-w-teardown/
Here is some specs for the drive that you'll need
* The drive, made by Hitachi, is a 3.3 v, 1.8″ Travelstar C4K60 Slim.
* The 30 GB drive is 5mm thick, the 60 GB drive is 8mm thick.
* These drives use the ATA-7 interface and a Zero Insertion Force socket. ZIF is a rare interface used only on devices like this, so it’s difficult to work with.
* If you’ve got a 30 GB model you might consider upgrading to the 60GB Hitachi, or you might wait as this 100GB Toshiba should start production in Jan 2007.
* If you’ve got the 60 GB version, there is no good upgrade path yet.
Sadly after extensive searching via Google Shopping, the only results are coming from used drives on eBay.
[https://www.google.com/search?q=HITACHI+HARD+DRIVE+FOR+CREATIVE+ZEN+VISION+W&tbm=shop|Google Shopping View]
[http://www.ebay.com/itm/like/251929912244?ul_noapp=true&chn=ps&lpid=82|eBay Harddrive (used)]