Will this work in an Inspiron 9300, or Latitude D600 (in-general any laptop?)
2.5" SATA Hard Drive to IDE 44 Pin Adapter For Laptop Drives
If you truly want to use a SATA HD you should either buy a SATA 9300 mobo or buy a secondary HDD caddy from ebay that is SATA. The secondary caddy would take the place of your dvd drive but you can always use an external dvd drive.
if you could mod that to take the dell edge connector for the IDE drives it might fit. wwidth wise no problem looks by the link to be the same width.or have a new circuit board designed with the dell edge connector for IDE drive it woouldn't be a problem. as the edge connector already sticks out quite a bit.