Go with the memory card exploit! FMCB package softmod er they're so many buyable for nothing, what, like a dime? Then OPL to run the games and wLaunchELF (the PS2 filebrowser) apps are really what you need
If you grab SwapMagic v3.8 (no no damn swapping) and have USB/flash drive handy it's very easy to "infect" your memory card yourself and unlock all her power ^.^ Just like our precious Dreamcast FUCK A MODCHIP!!!
And then you could even order MaxDIYPower's SATA board for the network adapter
so can say sayonara to shit IDEs and plug SATA HDDs =} (Those things living in Japan so patience and even has ribbon cable already attached to itself)
I got a used WD Blue 500gig for my PS2. Runs absolutely skrong and if you are going to go all-out you could even plug up to 2TB capacity
EDIT: Dude yeh that's No23 the_fog deathless.net guy er whoever. Ignores me when I mention Auto Modellista US Tuned that he got to work and when I offer to be tester -.- Hum I think the revival of the two Biohazard Outbreaks are many people's fault I think he did have a hand in the project, obsrv has been kickin for a while