No, you haven't, even if it happens to be your birthday! There seems to be a new virus for Windows users going around and I'm surprised I hadn't heard about it. It's very clever in that who doesn't want to open a greetings card sent from a family member?
The key to understanding the deviousness of this e-mail comes with the rollover ability built into Apple's Mail program. When you mouse over a link in an e-mail, a window opens showing the actual link address:
So what appears to be an inocuous ".org" web address turns out to be from Romania and the links contains a downloadable ".exe" file. Fortunately for Apple users, ".exe" files don't work. I bet "pictures.exe" doesn't contain a greeting you would want to receive!