Hi all! This is my first post here and I'm looking forward to many more. I've been a creeper for a while, learning more about the world of Mac from you guys' posts, but I just found out today that my 15'' Macbook Pro has shipped and should be here in a few days! I ordered it pre-installed with iWork, but I'm worried about compatibility with MS Word documents, since many newsrooms (and writers/editors in general) use PC's. Should I purchase MS Office for Mac? Or should iWork by itself be sufficient? Thanks!