There was another Momo, with an all red wheel, and real nice pedal base, that I think more or less worked with GT3 by accident, but then no longer worked with GT4 ... It's the only Logitech wheel I can think of that doesn't work with the PS2, as the most basic, standard and most supported force feedback wheel is based on the Logitech Wingman F1 GP (or whatever it is called), the PC part which was pretty much the same as what went into the first GT/PS2 aimed Driving Force wheel (with the PS2 buttons on it). Except that particular red Momo, all Logitech wheels are backwards compatible to it as far as I know, and all Playstation games that support Force Feedback always at least support that same standard.
Congrats though on getting the PS3, and let us know how it turns out and how you like it!