Next time - make it something you can remember from day-to-day, like a
phrase. Don't limit yourself to just a few characters. Your password could
easily be, "Iwon'tforgetthispassword!"
In any case - at the "Welcome" screen, press CTRL+ALT+DEL twice to get to a
classic logon prompt. For the username enter "administrator" (sans the
quotation marks) and leave the password field blank and logon. For most
people, this works. If your computer was setup by anyone with a little
snap, it won't... But it is worth a shot.
Go to http://home.eunet.no/~pnordahl/ntpasswd/ . There you will find
zip files that will let you create boot floppy disks or bootable CDs
that will enable you to reset any system password on an NT class
operating system