install EasiAccess, adding access codes into the screens 'Connect to Weather Station' - 'Setup' - 'Configuration' - 'Access Codes'.  Save the file EAccess.ini

Only use the directory 'EasiAccess Setup' contents unless you require anything from the other dir's like the USB_Serial dir.

Create MST adding EAccess.ini into either a CAB or extracted files with install location [INSTALLDIR].  I always use CAB

Make your company packaging standards - I added [ProgramFilesFolder] in front of the install location, Schema=405, delete desktop shortcut, AgreeToLicence=Yes, ARPNOMODIFY=1, MSIFASTINSTALL=1, REBOOT=R, ROOTDRIVE

Move the all contents of 'EasiAccess Seup' into a new directory called 'program files' except the directories 'Common', 'System32', 'Temp' and your MSI, MST and CAB files, these should remain where they are.

You don't need the directory ISSetupPrerequisites if your systems have these installed already.

I hope this helps.