Hi Folks A friend of mine is about to switch to Mac, he has a few basic questions and as I'm not that familiar with the new iMac range I thought someone here might quickly supply some answers. I know of course that all iMac's a re wireless, and I assume that the memory is user-changeable like on our G5 iMac. The video card discussion I'm not sure about at all. I don't personally think it's worth upgrading the CPU just for basic home use either. "OK, I am seriously looking at the new iMac. Just the base model, this already has a bigger screen than my TV so I do not really need the big screen, but I have a couple of questions you may be able to answer. Are the desktop versions wireless, not just the laptops? Is there any real advantage in moving up one model to change from NVIDIA GeForce 9400M graphics to ATI Radeon HD 4670 graphics with 256MB as I have no computer games, but would like to watch DVDs If I did an up grade on the base model, is it better to upgrade the processor from 3 to 3.33 GHz, or just upgrade the memory? Can I upgrade the memory myself?"