ZOOM guitar pedal connectivity (USB)

[Old Mac Donald]

I've just got hold of ZOOM G2.1u effects pedal with 24bit possibilities. I was trying it out for the first time last night and it has some interesting and hopefully useable sounds. Anybody else got one of these and, if so, how have you connected yours up running Logic? I notice it has a USB out and comes bundled with Cubase LE. I haven't had a chance to connect it to anything yet (I've just played it out of the box with headphones so far) but was just wondering the best way to link something like this up as I don't want to mess my existing interface/Mac IN/OUT settings up. I'll get to have a proper toy with come the w/e but any insights in the meantime would be much appreciated.