The link below has a nice set of instructions to easily turn off the (UAC) User Access Control. Know that a restart is required.
This feature will annoy most power users and admins more than your average user. So use your own judgment as to whether you should remove it or not.
http://lifehacker.com/software/vista/windows-vista-tip--disable-annoying-need-your-permission-to-continue-prompts-230866.phpLink no longer working? If so, just Google "Windows Vista annoying security" and a list of how to's will pop-up.