If I can ask as well while we're all on the subject, I intend to mod my PS2 also, but I do not want to apply a mod chip to my console, tho it seems to be quite the rage.
The method I had in was one I saw on a fateful screensavers episode before techtv turned into the smolder pit I also refer to as G4. The bit on the show they did was using a online adapter+a hard drive inserted into it to save games onto the hard-drive so they can be recalled for later use WITHOUT need of the intial game disk. All of the transfers from disk->drive happend on the PS2, if I recall correctly. However, I my memeory could be flawed.
Does this sound like a method we have seen before? Or did I just forget soemthing they mentioned on the show?
To summarrize again what I believe that modding method was:
A PS2 with an online adapter,
a hard drive inserted into the /\above/\ online adapter.
As the PS2 boots up, the hard-drive enables you to copy an inserted game disk's information onto the hard drive, so games can be played off the hard drive without the game-disk.
again, is this an actuall PS2 modification method.
PS: sorry about the wall o' text