I'm starting at medical school in either the UK or Ireland in 2006. I would like to know when I will have to start thinking about the USMLE, given that I already know that I want to do a US residency immediately after my 5 year medical school degree. I know there are various parts to the USMLEI - two of which I believe can be done outside the USA, and one which can't - right? Any insight into the timeline would be appreciated. Thanks.