I created a couple of videos regarding application signing. If someone sees these usefull, good.

Here are the links:

Open Signed - Offline DevCert request
http://www.youtube.com/watch?v=gVzd8QkYoOw

Open Signed - Online request
http://www.youtube.com/watch?v=S39F5Ft_Q2Q

Updating DevCert with manufacturer capabilities
http://www.youtube.com/watch?v=d17Vvd5mErA

Using Makekeys -utility to create a keypair
http://www.youtube.com/watch?v=VnB7KjMOE74

Signing the SIS-file
http://www.youtube.com/watch?v=RrM4HyEBVno

Verifying the signature in the SIS-file
http://www.youtube.com/watch?v=ou4EQ_P4P5A

Creating the DevCert request file
http://www.youtube.com/watch?v=yoNTm7-A3h8