Hello, Robert and Nic.
Thank you for providing the additional details.
Sitefinity 4.x/5.x require .NET Framework 4.0 as well as Visual Studio 2010. Click here
for a complete requirements list.
Once you have those, you can just drop the two files (FormsNotification.dll and FormsNotification.pdb) that you downloaded into the 'bin' directory of your SitefinityWebApp project. There doesn't seem to be a source project for the 4.4 version.
Then follow the instructions on the Forms Module Notification product page
Since there is no project for the 4.4 version of the add-on, you can skip steps 1 & 2. This is a replacement for the default Forms module so you won't see any difference until you enter the designer where you will see addition properties for the notification.
Please don't hesitate to contact us if you need further assistance.
the Telerik team
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