hi- is there anyone who uses 3D (FormZ, sketchUp, Maya, etc...) and 2D CAD software (VectorWorks, PowerCadd, ArchiCad, etc...) on a powerbook? i need a new computer in a couple months but have no space for a desktop, so I was wondering what people's experience were with powerbooks and CAD software. i'm pretty sure an ibook is out of the question because of RAM, graphics card and so forth... but i won't rule it out completely. thanks. -TO ps- i use graphics software to a lesser extent - illustrator, indesign, photoshop - what is its performance like on a laptop?