Additional information
Cudos to estrelow for doing the heavy work in this mod, but I had some issues with getting this working so I wanted to give some clarifications on how to get it up and going.
I'm using Windows 2008R2 / php / mySQL
In IIS you must add the URL Rewrite: I followed (http://www.iis.net/learn/extensions/url-rewrite-module/importing-apache-modrewrite-rules) instructions.
Restart the webserver
Add a API Key from the osTicket Admin Panel website "Manage - Add API Keys"
In Outlook open VB for Applications (ALT+F11)
In a project - insert a new module and specify the (Name) osTicketConnector
Then paste the modified code estrelow provided, and update Const API_KEY and HOST_NAME
REMOVE the topline "Attribute VB_Name = "osTicketConnector" from the script
Click on "Tools - References" and check "Microsoft XML, v6.0"
Save and close VB
Either in your inbox or in an open email right click to customize the ribbon bar, select Macros from Choose commands and select Project.Post2osTicket and add it to a custom group
That worked for me!