You can easily test bootable iso without burning it to a CD and without restarting your computer using MobaLiveCD or Sun Virtual Box.
You can also test bootable CD/DVD in VirtualBox without restarting your computer.

User accounts can be hidden at the Welcome Screen in Windows XP.
You can also log in to these hidden Accounts from the Welcome Screen.

With Windows 7, you now have the option to boot the OS from a VHD, a virtual disk file, instead of a partition. This way, you don’t have to reconfigure your hard drive partitions.
This feature is similar to Ubuntu’s Wubi installer which uses a similar concept to avoid reconfiguring hard drive partitions.
Basically, instead of installing windows 7 to your physical HDD by getting rid of Vista or even dual booting off another partition, you can install to a virtual HDD (in VHD format), and boot off the VHD so you actually get the hardware functionality to play with!!

Direct Download links to Windows 7 have been leaked.One way of installing Windows 7 is by burning the downloaded iso to a DVD.I found a way of installing Windows 7 directly from the hard disk by extracting the contents of the downloaded iso file.So you don’t have to waste a DVD to install Windows 7.You can install it directly from the hard disk by extracting the contents of the downloaded iso file.

Windows Media Player 11 is the latest Media Player released by Microsoft.It is not included by default in the XP Installation Disk.Windows XP users will have to manually download and install it. You can avoid doing this by integrating Windows Media Player 11 into your XP Installation Source by using a tool called Windows Media Player 11 Slipstreamer.