Hello Rterren,
The above document would hold good for managed as well as unmanaged
all you have to do is while exporting select the option , export as unmanaged
after unchecking single exe option.follow the article to have latest defs and create single exe.
You can create a custom installation settings which would just have whatever you wanted to .
Click on Client Install feature set
-Right click in the right hand window and click Add
give it a name say custom feature
select what ever you want to add/modify
click on okay
now slect 32 client installation packages
click on export
in the option "select the client install feature set " click the drop down menu
you should your custom feature in the list
(in the same way you have have installation options)
export as unmanaged
follow the virus defs doc and you should have everythign in place.
hope this helps
Good day !