I've just had the Modbo 760 in my prechipped PS2 replaced with a CC2.0! All I can say is that you get what you pay for! I've set up ULE's "PS2Net" goodie, I have FTP access from my PC and USB HDD's work nicely.
However, I notice in the BootManager there are options to "Copy mc* to HOST" and a bunch of network options in the BM. I've configured these and I can ping the PS2 from the PC, but I can't seem to find any details on what I need on the PC to make this copy work. Any ideas?