If should ever lose you're password and can't login to one of you're Windows XP accounts and would like to reset you're password again follow the steps below to resolve you're problem.
What you will need:
1. CD-R or USB Drive2. Offline Windows Password & Registry Editor
CD Release: cd110511.zip (4.08MB)
USB Release: usb110511.zip (4.08MB)
This is a utility to reset the password of any user that has a valid local account on your Windows system.
Supports all Windows from NT3.5 to Win7, also 64 bit and also the Server versions (like 2003 and 2008)
You do not need to know the old password to set a new one.
It works offline, that is, you have to shutdown your computer and boot off a CD or USB disk to do the password reset.
Will detect and offer to unlock locked or disabled out user accounts!
There is also a registry editor and other registry utilities that works under linux/unix, and can be used for other things than password editing.
How to make the CD:
Unzipped, there should be an ISO image file (cd??????.iso). This can be burned to CD using whatever burner program you like, most support writing ISO-images. Often double-clikcing on it in explorer will pop up the program offering to write the image to CD. Once written the CD should only contain some files like "initrd.gz", "vmlinuz" and some others. If it contains the image file "cd??????.iso" you didn't burn the image but instead added the file to a CD. I cannot help with this, please consult you CD-software manual or friends.The CD will boot with most BIOSes, see your manual on how to set it to boot from CD. Some will auto-boot when a CD is in the drive, some others will show a boot-menu when you press ESC or F10/F12 when it probes the disks, some may need to have the boot order adjusted in setup.
How to make an bootable USB drive:
Copy all the files that is inside the usbXXXXXX.zip or on the CD onto an usb drive, directly on the drive, not inside any directory/folder.It is OK if there are other files on the USB drive from before, they will not be removed.
Install bootloader on the USB drive, from command prompt in windows (start the command line with "run as administrator" if possible)
X:syslinux.exe -ma X:
Replace X: with the drive letter the USB drive shows up as (DO NOT USE C:)
If it seems like nothing happened, it is usually done.
However, a file named ldlinux.sys may appear on the USB drive, that is normal.
It should now in theory be bootable.
Please know that getting some computers to boot from USB is worse than from CD, you may have to change settings, or some will not simply work at all.
Vist Offiline NT Password & Registry Editor For More Information.
Video courtesy of r00tk1ll