I'm currently working on a solution which involves 2 projects that share some of the same code. However, when I right click on a project and select "Add->Existing Item", I no longer get the "Add As Link" option on the "Add" drop down button.
I am using Visual Studio 2010 Express in Window 7 on a 64bit machine and have done this before on Windows XP 32bit. I'm not quite sure why it isn't showing anymore.