I have an HP PSC 750 that I would like to hook up to my new iMac via USB. However, when I plug it in and go to the Print Setup app to add it, it says "driver not installed". I've just been to HP's Mac printer website and it lists the PSC 750 as having a Panther driver "available soon". My question is, does anyone know how soon, and has anyone been able to get this printer to work with a Mac with another driver?