BradleyF81, don't worry too much. When looking at answers given here, always check the poster to see how long there have been here and how many posts they made.
littlegreenman is a newbie as well. In his haste to be helpful he neglected to carefully read your post. Course maybe it's because he a Brit and you're a Yank. Two countries separated by a common language! I understand you however.

This often leads to this syndrome:
Having said that, he IS trying to be helpful and will make a worthy addition to our community on this board and hopefully you will as well (Even IF you are a Yank! -
I'M ALSO ONE 
)
The real bottom line is that those obtaining PR under the family ties scheme, while liable for NS, are usually given a waiver. This, while a sigh of relief I hear, is obviously at the pleasure of the government. Should something untoward happen here, regarding the currently proclivity of countries to invade other countries, you could always find yourself with a revoked waiver. I doubt very seriously that this would happen, but I would be remiss if I didn't mention the fact.
SMS