There are frequent times when I need to get a full path and file name from Windows Explorer into something else. Fortunately Vista has a "hidden" feature built in to make that easier.
For example, earlier today I had to point to a Virtual PC hard disk image that I had downloaded when setting up the VPC environment for it. Since I was already looking at the file in Windows Explorer, I simply used Shift-Right Click and then chose Copy As Path to get the full path and file name onto the clipboard. A quick paste and I was done.