Thank you for the response. And you are correct, I should have posted my location. It had not crossed my mind. I live in Oregon, United States. Thank you for the information along with the links.
Recently, I read a review posted by a Garmin 64s user from a couple of years ago, stating if you buy the download version of the Garmin Topo's you can not 'play' with them on the computer. Whereas buying the DVD version it allows you to do this. I do not see on Garmin's website being able to purchase the TOPO U.S. 24K - West maps on DVD any longer. Download or SD card only. Since that review has been from a couple of years ago, possibly things have changed and you can use the downloadable version on the computer now.
-Jace