Newbie question re use of miles
 

Hey guys,

I'm fairly new to frequent flyer programs and have a few question:

I have SILVER status right now, so I got one "Double Miles Award Ticket".

From what I understand that means I can buy a ticket with my miles and the price is TWICE the amount of actual flying-miles, correct?
I am flying from Hong Kong to Munich via Moscow ... is this ONE ticket or can I only purchase one leg anyways?

How do I "purchase" this?

What class is it? Economy? Can I upgrade to comfort also?

Do the miles flown with this ticket count towards my miles or qualifying miles? I assume not?

thanks so much!