Ultimate Boot CD

i just tried to make a password reset and i followed al the steps and it didnt work,

does the hard disk have to be in the comnputer in whichi am resetting or can i pull it out and attach to another pc and do it that way

i saw that ubcd has a built in antivirus how would i go about getting the updates and applying them to the UBCD

would i have to make a new CD or would i be able to inject them some how on a usb stck and have it run from the usb??