Well, as for right now it's not the greatest idea to just ditch Vista. Since Windows 7 is only in the release candidate stage it still has a chance to be fixed and upgraded before it is shipped to the consumer. The easiest way to do this is to partition a small part of your hard drive so you can install Windows 7 without losing your Vista operating system. If you would like I can tell you the easiest way to go about doing this.
Yeah, if you would, that would be awesome. How small a part of the hard drive are we talking? When is W7 due for release?