Desktop Pop Up Anouncer Software

We need a piece of software that loads onto lots of peoples computers then when we want to tell all these people about something new we have added our end like a new video or one of the standard miniture type web pages it pops up a little bubble with a 1 on it to show something new has been added, they then click on the icon in there icon tray and it launches the software. I have included two images in a zip file 1 Customer view and 2 Our Admin view of the software we use to add content We need to have the main home page view which will play video and the sub pages which they can navigate to with the side tabs are html based so we can add forms like aweber etc and text and images etc When user clicks on one of the tabs the video goes and it shows a different page of the pop up - a bit like when you click on a new page of a website so home page is video page Tab 1 could be an opt in form for latest webinar Tab 2 could be a message about a new product we have Tab 3 could be about some offer from one of our friends but then we can change what ever we want them to be.