Some MED-V 2.0 questions

Hi
 
I know this forum has been quiet  for a while however I have a few questions about implementing MED-V 2.0 - if I'm asking the question in the wrong place feel free to redirect me - I just don't want to start badly by cross-posting
 
So we're at the stage of having all the MED-V client components deployable via SCCM and have worked up a basic Win XP Pro SP3 syspreped image that deploys, joins the directory, has the SCCM client installed and allows software to be deployed - all is okay, but....
 

1. How do I implement some sort of pass-through authentication so that the users don't have to logon to the image when they first fire up an app??
2. How do I prevent items from the guest OS presenting themselves in the host OS's system tray, i.e. anti-virus and the SCCM widget 'A new program is available to be run (Remote)'??
3. How can i get the guest OS to fire up, without a logged on user, so that I can install applications at a particular time of night??

That's all for now but I'm sure that I will have more questions with time
 
Many thanks in advance
 
Greg