Locked out Win2000pro ! login pswrd

Open up the box, and short the BIOS. Your systems book will direct you to the correct jump.

I forgot to say, "on reboot, go to setup and reset your BIOS for password in CMOS settings".

To access the hard drive and recover the outlook files. Did you try the password in upper and lower case? Look at HOW TO: Create and Use a Password Reset Disk for a Computer That Is Not a Domain Member in Windows XP (Q305478)
From Microsoft. HOW TO: Create and Use a Password Reset Disk for a Computer in a Domain in Windows XP (Q306214)

I am not sure I understand your problem correctly. Based on the responses that were posted I am confused even more. Did you lock yourself out of your computer or Windows 2000 Professional OS?
If its the BIOS you locked your self out of, there is a jumper on the motherboard you need to pull (then start the system), and you should be all ready to go.

If its the OS that you are locked out of...then reinstall 2000 PRO. That overwrites everything.

This is from the TechRepublic W2K server tips.

If you have Windows 2000 installed on a FAT or FAT32 partition, you can use a DOS or Windows 9x boot disk to boot the computer and then delete the SAM file in the \windows\system32\config folder. After you restart the machine, you'll be able to use Administrator username with a blank password. Note: You'll lose all user accounts defined on this machine.

If Windows 2000 is installed on an NTFS partition, you have two options--both require a bit of work. One option is to use a utility that allows you to read/write on an NTFS partition, such as NTFSDOS from Winternals. You can then use a DOS or Windows 9x bootable floppy to boot the computer and delete the SAM file.

Or you can delete the SAM file from another instance of Windows 2000 if you don't want to fool with old bootable floppies. This requires you to install a temporary instance of Windows 2000 on the same computer and delete the file from there. After you log on to your original installation, you can remove the temporary one.

There's a slightly different method you can try if you don't want to lose all your existing user accounts. By default, Windows 2000 starts a special screen saver (located in Logon.scr) when no one logs on for a certain period of time. If you rename Cmd.exe to Logon.scr, the system will open the command prompt under the system account instead of the screen saver.

Once you get the command prompt, type net user administrator mynewpassword, where mynewpassword is the password you want to assign to the administrator account. You won't have problems copying Cmd.exe to Logon.scr if you have FAT/FAT32, but with NTFS, you'll have to come up with something else (e.g., a new parallel installation of Windows 2000).

All computers manufactured over the last 5 years have what's called "Jumpers" on the motherboard. Usually these jumpers are near the IDE controllers within about 2 to 3 inches towards the center of the motherboard. Best to follow your manufacturesguides to view where they are. The settings of these jumpers are usually 3 pins numbered as so, 1-3. The jumper for normal system operations is usually 1 and 2 are shorted. To set the computer into "Maintenance" mode you need to set it as 2-3, then boot the system and it will take you into the system's bios and setup where you can delete this password and then power system down and move the jumper back into place. Thus setting system back to normal and then restart as if nothing ever happened. Good luck...