After (too) many years as a PC user I've finally made the switch to Mac, in fact I'm typing this on my new 13" MacBook Pro. I've literrally only started using this so need some quick advice. I currently have my iTunes library, music, apps, movies, etc. on an external HDD that I just plug into whatever PC I'm using at the time and sync my iPod/iPhone off it whilst there. I want to transfer all this onto the HDD of this MacBook, and use the external drive as my Time Machine drive. Any advice? Thanks in advance.