Hi all, I'm a 4th year (Honours) physics student from Australia thinking about applying to do a PhD in the US. I'm aware that I'll need to take the GRE exam, but I'm otherwise quite ignorant about the procedures involved. For example, when to take the GRE and how early must it be taken prior to commencing a PhD. At what time of the year do US PhDs typically start work etc. Also, do these requirements vary substantially from one university to university? Is there anyone here that has any experiences in applying to US PhD programs that they could share with me? Are there any websites set up for this purpose? Thanks.