As I understand driver test signing:
On Dev Box
1. Create a certificate and install in the personal store
2. for your driver project use int2cat to create a catalog file (.cat)
3. sign the .cat file using the SignTool.exe with the certificate previously created.

Than in Virtual Machine:
1. Make sure VM is has bcdedit testsigning ON (this seemed to be set for me when i ran visualdkk in vm)
2. Move certificate into VM and install certificate into the Trusted Root Store

unless i missed a step that seems like I’ll i need to do, however, when i run my test driver in the VM i still get the annoying red popup box that says “you are trying to load and signing driver…blah blah..” then i have to switch to vm click and switch back to visual studio (very not cool). Any ideas why my test signing is not working?

On a side note it would be a nice feature of visualDDK if in the project you just say you want to use test signing and then everytime you build the project it automatically generates new .cat file and signs it for you.