Visual Studio 2005 has a new feature that lets you automatically save your projects and recover them when the IDE crashes. If you've done a lot of programming in Visual Studio, you'll know that it tends to crash at just the wrong time.
To configure this option, go to Tools \ Options and then click on AutoRecover in the Environment section:
The option should be usually enabled by default.
When Visual Studio crashes, you'll see a dialog like this when you restart:
All you have to do is click the Recover button, and you are right back where you were.