Vista - Windows 7 Classic theme doesn't get along with VPC

Windows 7 will not hold the active title bar, inactive title bar and Caption
buttons settings that I make. It holds them for as long as I have full
screen view. I can't even set anything in the Item list until I put the view
on full screen yet on Vista Ultimate, I can set all items without needing to
go to full screen.

So, on Windows 7, I use full screen and set all the items as I want them. As
soon as I minimize Windows 7, these three settings revert to large icons on
the systray (caption buttons) and active title bar and inactive become too
small. IE8 displays a gigantic, distorted favicon in the address bar. (Maybe
that is just the version of IE 8 on Windows 7 but IE is affected, as any
browser is, by the settings you make in Items). On Vista Ultimate, on VPC,
there is no problem remembering the settings when I minimize it.

On Windows 7, on full screen, the moment I use right alt/Enter keys, I see
the icons in the systray become way too large and they are distorted with
jagged edges. If I go back to full screen the icons remain way too large and
distorted and the other 2 Items mentioned above stay too small. This doesn't
happen on Vista on VPC. I have saved the theme although when I made further
changes in Items the theme did not want to be saved as modified. I don't
know why. So, it should not revert back to default on those three items
because I did save the theme successfully when I first made it and all other
items stay as I set them.

I also see way, too many strange artifacts on the screen if I boot Windows
7, or when I minimize it from full screen, in both instances there is much
drama and black screens, gigantic icons created on the host machine, loss of
the task bar on the host and then it comes back in the wrong resolution
(something like 640x ??), more drama, more various sized black screens and
flashes of color, eventually Windows 7 ends up as full screen black screen
or a smaller black screen usually in the middle of the host computer's
screen. Right Alt/enter will eventually, after more drama, get Windows 7 to
properly display. I have a bit of this happening when I boot the Vista
machine but nothing like Windows 7's agony before it finally will display.
Maybe this happens because I don't have hardware virtualization, but I doubt
it as the "drama" booting Vista is mild compared to the contortions of
booting Windows 7 on VPC.

Are these problems occurring just because Windows 7 is not optimized yet?
I'm trying Windows 7 because I plan to buy a computer later this year and I
don't know if I will want to get Vista or Windows 7 and having problems
using Windows 7 on VPC doesn't help me make up my mind. I will not be using
Aero even though I will buy the Ultimate version of Windows 7 or use the
Vista Ultimate 64bit disk I have but have not used. So, seeing how these two
display using classic view is important to me.