Locate itunes downloaded firmware on a Windows XP and Vista OS

Find the itunes downloaded firmware on a Windows Vista OS at
C:\Users\UserName\AppData\Roaming\Apple Computer\iTunes\i[phone/pod] Software Updates

Find the itunes downloaded firmware on a Windows XP OS at
C:\Documents and Settings\UserName\Application Data\Apple Computer\iTunes\i[phone/pod] Software Updates

You can copy the link above and paste in your windows file path field
Note:
UserName should be changed with the name of the machine.
i[phone/ipod] Software Updates should be either 'ipod Software Updates' or 'iphone Software Updates'

Have fun!!