Here's a cool little Vista trick I just learned:

1. Browse to a file. 
2. Hold down shift and right-click on the file.
3. Select "Copy as Path"

The path for the file, include the filename, is now in your clipboard.  You can paste it into any app.  This is useful when sending a network file's path in mail or when trying to execute a file with command-line parameters (just paste into the run prompt or a cmd window).