During the installation of Windows, it is possible to launch the command prompt after entering the username and password.
Just press Shift + F10 and the command prompt will appear.
By this you can enable the hidden administrator (inactive) account and others, tweak anything while installing, and verify the settings through command prompt.
Tested the installation using Virtual PC running 512mb, enabled virtualization and 2 Ghz Core2duo processor while using the classic theme of windows... Its fast.. Thanks for reading the article!