Need to Reset Lost Windows 7 Password?

Either boot a Linux cd or
use the Windows 7 OS Disk
  choose REPAIR YOUR COMPUTER
  then Command Prompt

You can chosoe between using W\S32\sethc.exe or utilman.exe
Copy the original file for saftey
then copy cmd.exe over the selected file /y

When you restart and get tot he login screen
sethc - must hit shift 5 times in a row
utilman - click the icon in lower left

then use the following command:
  net user myusername mypassword
 and Login

When done, reverse the steps to put the original files back in place.