Here's what the owner of this "single file generator" tool says:
I only see one way of making this work in Whidbey using the single file generators.
1) Create a project to hold the common resources
2) This project and all projects which want to share its resources must be given the same default root namespace (e.g., “MyCompany.MyAppication1�
3) Put your .resx file in the common resources project in the same subdirectory structure that you’re going to put them into in the shared projects (e.g., “Common\Resources� produces namespace MyCompany.MyApplication1.Common. Resources�. Note that the directory structure controls the namespace used for the .resources file in the assembly’s manifest
4) In the projects which will use these resources, create a link to both the .resx and generated .Designer.cs files (in the same subfolder structure). Make sure the linked .resx file’s Custom Tool property is blank.
5) Only edit strings in the common resources project’s .resx file, not the linked versions
Example directory structure:
Solution1
Project “CommonResources�(default namespace = “MyCompany.MyApp1�
Common
Resources
Resources.resx
+Resources.Designer.cs
Project “Project1�(default namespace = “MyCompany.MyApp1�
Common
Resources
Link to Resources.resx
Link to Resources.Designer.cs