Answer:
TOPO! Explorer Deluxe ships on 2 DVD discs, but can be installed and used via the internet if you do not have a DVD drive.
The TOPO! Explorer application can be downloaded and installed from the following website:
http://www.topo.com/downloads The application available on topo.com is the same (if not newer) than the application found on either TOPO! Explorer or Explorer Deluxe retail kits.
To redeem your map credits and access the 100k maps that come with Explorer Deluxe follow the instructions below:
1. Launch your TOPO! Explorer application and login. If you have not installed this application, visit
http://www.topo.com/downloads 2. Click the 'My Account button' in the upper-left and then select the 'My Purchases' Tab.
3. Select the 'enter another serial number' link near the center of the page and then enter exactly as printed (Including all caps and dashes) your TOPO! Explorer serial number. The SN is printed on a white sticker on the back-right corner of your CD case.
An on-screen message will appear that TOPO! Explorer maps are being installed - click OK. A secondary screen will notify you when the installation is complete. Note: your Maps list in your library will now display a tab for SuperQuads and for "TOPO! Products" - you'll see an entry for TOPO! Explorer Deluxe on the "TOPO! Products" tab.
4. Once activation is complete, simply zoom into the maps. When you reach the 100k level maps you may be asked to insert either DVD 1 or DVD 2. If you do not have a DVD drive, just click 'Cancel' and these maps will be downloaded from the topo.com map server as needed.