hmmm thats no good, well i guess you should go into control panel > users accounts > click on ya self > now where is says "create password" click on that, now where it says enter your old password - enter it, the leave the other passwords feilds blank and click on create password. now that will disable ya password....then i think you might have to do this next step as well....hmmmm then goto startup menu, click run, enter "control userpassword2" (without brackets) and there you will see a setting saying "user must enter a name and password to enter this computer" - make sure this has not got a tick init, then click ok and hopefully viola....done (i hope)
Go into START>RUN and type "CONTROL USERPASSWORDS2". There is a checkbox saying "Users must enter a username and password to use this computer". Deselect that. Then go into CONTROL PANEL and click USER ACCOUNTS. Then click "Change the way users log on or off" and deselect "Use the Welcome Screen". Now your computer should boot without having to log in.