Vista - Windows Mail Address Book

I came across a couple of interesting situations in Windows Mail this
morning that I think are rather serious shortcomings:

1. In sending out mail to a couple of dozen friends I was told that not all
of them wanted (or were set up, I guess) to receive HTML mail but rather
plain text. I thought this strange but had a look - a simple thing to
determine in Outlook Express. But wait a minute - nowhere could I find any
option for individual contacts in my Address Book to select whether they
wanted HTML or Plain Text. So I guess my question is how are some of the
contacts in my Address Book complaining to the system when I try to send
them HTML? Am I missing something?

2. Okay, here's the second problem. I have set up my address book, or at
least tried to, the same as I had it set up under Outlook Express. First of
all I was very disappointed to find I could not. First I set up my
most-used Contacts in the main folder. Then under that I set up specific
folders for less-used Contacts. Unfortunately, in Windows Mail, when I
click on the To: in my message, it brings up ALL the contacts, not just
those in the main folder, as in Outlook Express. That makes addressing mail
very time-consuming.

That aside, if I double-click and go into one of the sub-folders there's no
way to get back out into the main folder. There needs to be an Up option.
Oh, I know I could just open the Navigation Pane but I don't want the
Navigation Pane open - just a simple Up button would do the trick very
nicely.

And what's with the Address Book window not remember from opening to opening
how it was set up. That's really annoying.

David