diff --git a/.gitignore b/.gitignore
index d49abf5..c948f29 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,6 +37,7 @@ var/
 *.egg
 .eggs/
 .python-version
+dmg/
 
 # PyInstaller
 #  Usually these files are written by a python script from a template
diff --git a/PreparingADisti.txt b/PreparingADisti.txt
index 8d8c1c8..eb150e2 100644
--- a/PreparingADisti.txt
+++ b/PreparingADisti.txt
@@ -109,7 +109,7 @@ If you want to increment any part of the version number, you can do so by
 
 Creating a Mac app contained in a DMG
 -------------------------------------
-Assuming you're in Terminal and currently in the `[YourWhateverFolderPath]\Roastero\Openroast` folder, you can create an app build by typing `./build_mac.sh -n -m` and pressing Enter.  A disk image (DMG) containing the app will be created in the folder `[YourWhateverFolderPath]/Roastero/Openroast/dist`.   You'll want to test this app on a separate Mac machine to verify functionality.  
+Assuming you're in Terminal and currently in the `[YourWhateverFolderPath]\Roastero\Openroast` folder, you can create an app build by typing `./build_mac.sh -n -m` and pressing Enter.  A disk image (DMG) containing the app will be created in the folder `[YourWhateverFolderPath]/Roastero/Openroast/dmg`.   You'll want to test this app on a separate Mac machine to verify functionality.  
 
 Posting the installer on Github
 -------------------------------
diff --git a/build_mac.sh b/build_mac.sh
index bbf89e6..cf85587 100755
--- a/build_mac.sh
+++ b/build_mac.sh
@@ -211,7 +211,7 @@ fi
 if "${make_install}" ; then
     echo "make_install - creating Openroast app..."
     # remove old stuff
-    rm -rf build dist
+    rm -rf build dist dmg
     # get version string
     version_file=($(<openroast/version.py)) 
     version_string=$(echo ${version_file[2]} | tr -d '"')
@@ -220,7 +220,7 @@ if "${make_install}" ; then
     echo "Using version_mmp = ${version_mmp}"
     sed -E -e 's/%VERSION%/'"${version_string}"'/' -e 's/%VERSION_MMP%/'"${version_mmp}"'/' <setup_py2app.py >setup_py2app_"${version_string}".py
     # build!
-    echo "Laucnhing py2app..."
+    echo "Launching py2app..."
     python setup_py2app_"${version_string}".py py2app
     rm setup_py2app_"${version_string}".py
     # now, for some serious manually-powered stripping of unecessary files
@@ -287,15 +287,22 @@ if "${make_install}" ; then
 
     # Create DMG for distribution
     echo "Creating DMG..."
+    rm -rf dmg
+    mkdir dmg
+    # copy other required files to dist...
+    cp build_tools/CH34x_Install_V1.4.pkg dist/
+    cp 'build_tools/Openroast 1.2 for Mac README.rtf' dist/
     ./build_tools/create-dmg/create-dmg \
+--background 'build_tools/mac_dmg_background.png' \
 --window-pos 100 100 \
---window-size 400 200 \
+--window-size 400 400 \
 --icon-size 100 \
---icon 'Openroast '"${version_string}"'.app' 100 100 \
---app-drop-link 300 100 \
-'./dist/Openroast '"${version_string}"' Installer.dmg' \
+--icon 'Openroast '"${version_string}"'.app' 100 300 \
+--icon 'CH34x_Install_V1.4.pkg' 300 100 \
+--icon 'Openroast 1.2 for Mac README.rtf' 100 100 \
+--app-drop-link 300 300 \
+'./dmg/Openroast '"${version_string}"' Mac OS X Installer.dmg' \
 dist \
 /
-    rm -rf 'dist/Openroast '"${version_string}"'.app' 
     echo "make_install done."
 fi
\ No newline at end of file
diff --git a/build_tools/CH34x_Install_V1.4.pkg b/build_tools/CH34x_Install_V1.4.pkg
new file mode 100755
index 0000000..63fdf19
Binary files /dev/null and b/build_tools/CH34x_Install_V1.4.pkg differ
diff --git a/build_tools/Openroast 1.2 for Mac README.rtf b/build_tools/Openroast 1.2 for Mac README.rtf
new file mode 100644
index 0000000..2c985eb
--- /dev/null
+++ b/build_tools/Openroast 1.2 for Mac README.rtf	
@@ -0,0 +1,22 @@
+{\rtf1\ansi\ansicpg1252\cocoartf1348\cocoasubrtf170
+{\fonttbl\f0\fswiss\fcharset0 Helvetica;}
+{\colortbl;\red255\green255\blue255;}
+\margl1440\margr1440\vieww10800\viewh8400\viewkind0
+\pard\tx566\tx1133\tx1700\tx2267\tx2834\tx3401\tx3968\tx4535\tx5102\tx5669\tx6236\tx6803\pardirnatural
+
+\f0\b\fs36 \cf0 Openroast 1.2 for Mac README
+\b0\fs24 \
+March 26, 2017\
+\
+Is it assumed that you are reading this because you have downloaded and mounted the Disk Image (DMG) file.\
+\
+
+\b\fs28 Installation Instructions\
+
+\b0 1. Drag the Openroast 1.2 icon over to the Applications shortcut.  This installs the app.\
+2. Click the file named CH34x_Install_V1.4.  This is the driver for the Freshroast SR700\'92s USB chip. You must install this in order to enable Openroast 1.2 to connect to the device.  \
+\
+
+\b Appendix - Details about the USB driver\
+
+\b0 Specifically, the Freshroast SR700 device uses a QinHeng CH340 USB to serial port integrated circuit. We have included version 1.4 of this driver as a courtesy - it is current as of the date of this writing.  It was obtained from {\field{\*\fldinst{HYPERLINK "http://www.wch.cn/download/CH341SER_MAC_ZIP.html"}}{\fldrslt http://www.wch.cn/download/CH341SER_MAC_ZIP.html}}.  There may be newer versions of the driver available in the future.  Please search the web for \'91QinHeng CH340\'92 to find a compatible driver in the future, if necessary.}
\ No newline at end of file
diff --git a/build_tools/mac_dmg_background.png b/build_tools/mac_dmg_background.png
new file mode 100755
index 0000000..76523a9
Binary files /dev/null and b/build_tools/mac_dmg_background.png differ