Here is where I am at:
Computer - Windows 7, internet explorer 10, 53-6635-My_Trails-install.exe, 122-1266 Kansas topo-install.exe, Base Camp_412.exe, Free Set up-exe, Map Set Tool kit_v1.77.Zip, Map Source_6163.exe, rebuilt.Map Set Tool Kit_v1.77.2:P,
First off, you are not going to need these:
Free Set up-exe, Map Set Tool kit_v1.77.Zip, Map Source_6163.exe, rebuilt.Map Set Tool Kit_v1.77.2
You should run the installed for BaseCamp to install BaseCamp on you PC.
Open BaseCamp to insure that it is working, there will be a World BaseMap included with it.
Quit BaseCamp to install maps.
Run the installer for the MayTrails: 53-6635-My_Trails-install.exe
Open BaseCamp again and you should be able to swith from the World BaseMap to May Trails. This will insure that everything is working and you are able to proceed.
Quit BaseCamp to install the TOPO maps.
Run the installers for the TOPO Map: 122-1266 Kansas topo-install.exe
Open BaseCamp once again and you should be able to switch map products between the World BaseMap, My Trails and the Kansas TOPO.
Next, set up your Oregon.
Turn on you GPS and go to the Main Menu, Setup, System, Interface, and select Garmin Spanner. Back out to the main Menu and turn off the GPS.
Use the USB cable that came with the GPS and plug it into your computer. Te GPS will power up and you will get a message on it: "USB Cable Detected. Would you like to go into Mass Storage Mode?" Select the "Yes" button (the top one). Your GPS will save all the data from the GPS internal memory to the flash memory to use with BaseCamp.
Next, BaseCamp will mount the Oregon and check to see if it is running the current software. If not, it will prompt you to update the Oregon's firmware. Do this if you have an older version installed (and you might even though you just purchased it recently.) If you have to update the GPS, then you will need to restart the GPS for the update to take place. Make sure you have new batteries installed for this to prevent problems.
Your GPS should now be listed under devices in the left panel. You can proceed with loading maps at that point. See the following tutorial on loading maps:http://www.gpsfiledepot.com/tutorials/how-to-load-maps-on-my-garmin-gps-unit//