Hi, I am going to buy a iMac at christmas. My local Apple Retail Store is in Glasgow. I am not going to be buying a box standard iMac. I will be adding a bigger hard drive and a wireless mouse. I would like to get my mac from a retail store. I do know that you cant buy a personalised mac from a reatail store straight away. My Qeustion: 1. Can I order my mac over the phone with the changes and then pick it up in store at a later date. 2. Are Apple good with stock of iMacs at Christmas. Thanks in advance.