Since I wasn't completely happy with the functionality the default DotNetNuke blog module provides, I decided to change to BlogEngine.NET. As you can see from the address of this blog I wanted to include the blog in our company website as a sub-directory.
When creating a virtual application within the DNN root website I ran into some errors. Whenever I tried to open the blog I got an error regarding Resources that could not be found.
I added the following lines of code (marked in red) to the web.config of the DNN root and now they are running happily next to eachother.
<location path="." inheritInChildApplications="false">
<system.web>
...
</system.web>
</location>