Can I in-place install checked build of Vista?

Yes. I need to reinstall it...

And then just to find out the Vista Checked Build in MSDN is RC1... Why don't they just mark it with RC1? Nowhere from the download description and install screens I can find it out, not until after install.

The sound card is not detected, the system hang whenever I try to detect the sound card... I was suddenly hitted by the gitches of RC1...

And what's worse? In WinXP when I reinstall without hardware change I need not activate it again, but now I have to reactivate, even if the "windows.old"(containing release, non-checked build version) folder is untouched.

1) I don't want to spend me activation count on RC releases. Can anyone tell me if I need to reactivate if I install the "release" again?

2) If yes, is there some method that I can copy folders from the "windows.old" folder so I need not activate again when reinstall? (Same disk, same hardware. I just want to undo the "need to reactivate" effect RC1 has made)

3) Which email address I can send to in order to tell them to "fix" the description of "Windows Vista Checked/Debug build" so others will not get trapped again?

I have to say that this "slight mistake" have ruined my installation experience and my schedule to try out the system these 2 days. They should be more careful about the description of file versions.

EDIT: I see that in the corner that it should be in fact RTM because "build 6000" is shown there. But why the "recover from system failure" box contains RC1 in it?

And it's also strange that I get the update for 6600GT display immediately after "release" version, but not the "checked" version... seems their driver set is different.