Vista - first problem in windows ever

i hade used every windows ever and i never had any problem in any but in
vista i forgot my
Administrator password, now here is what's going on
i have no right to download anything so i can't download any Password
recovery program
safe mode is not working for me it's asking me for the administrator password
my computer is getting slower i can't use any of my program
i lost my vista cd so i can't reinstall
when i want to use command prompt i keep getting System error 5 has occurred.
i can download windows update so if there is some kind of an update to
remove administrator account and leave mine that well be cool
and if any one know of any way please tell me, thank you

Hi lpkizz,

If you have your product key number, then you can borrow a friends Vista installation DVD to reinstall Vista with your product key number. If not and you have a OEM computer, then you might be able to call the OEM Manufacturer (EX: Dell), and order a replacement installation DVD for your computer for a small charge. Otherwise, it is time to buy yourself a new copy of Vista.

Hope this helps you,
Shawn