I use adb to write/get files from emulators and Windows (and from/to real device too).
You could open a Windows' command window
(writing and executing cmd in "search programs and files") and then:
to copy a file from Windows to an Emulator:
adb push [Windows path]\[file name] [Emulator path]
(e.g.: adb push C:\Users\USERNAME\Desktop\FileToCopy.txt /sdcard/)
to get a file from an Emulator:
adb pull [Emulator path]/[file name] [Windows path]\[file name]
(e.g. adb pull /sdcard/FileToGet.txt C:\Users\USERNAME\Desktop\FileToGet.txt)