In this video I take you through the steps to creating your own bootable USB flash drive for Windows 7 instillation. USB flash drives are far faster then traditional CD/DVD optical media drives and thus the instillation of on Operating System is far faster.
Check out the video here:
In order to start from your bootable USB flash drive you will have to configure your BIOS to use the drive as your First Boot Device. For further instructions check the How to configure BIOS page here.