First, adobe reader needs to be extracted to the core files. This is done following these instructions:
http://www.adobe.com/products/acrobat/solutions/it/deployment.htmlAdobe apps are always a little troublesome, but they have some a long way to make it easier. Read the documentation and use their tool. It will save you hours of hair pulling.
WinRar is not an MSI so you would need to repackage it to leverage it well.
Good luck to you.