Also, I heard you can not rename a file in OSX by marking it and pressing F2 ?
Ummm... If every operating system behaved exactly the same way in every case, there wouldn't *be* any other operating systems! Myself, I've always hated Windows shortcuts. F2? How does that make sense? It's just because you've learned that from somewhere, rather than having a logical shortcut like RAmiga-R (for Rename). Keyboard shortcuts in any other OS (with the exception of Linux) are easier to learn and remember than Windows ones. for example, to quit: Amiga, it's RAmiga-Q. In Mac OS it's Apple-Q. In Windows it's Alt+F4... And that's just one example.
Anyway, on my mac, I find it's easier to simply click on the highlighted file's name name and edit the file name that way.