ARE DVDRW WORTH THE INVESTMENT???

If you have another modchip now and are playing backups OK, then probably not. There used to be a tutorial on playstationmods.com but that has vanished. I have it as a 1,5MB zip file that is difficult to mail!

The main beauty of Origachip is that it plays (along with everything else) import originals. these will require no laser adjustment because the PS2 was designed for original pressed disks.