i need to change my voltage regulator

[skrewcop]

HI, i have read most of the threads about alternators but i still don't understand. (Not that mechanically inclined). I have to change the voltage regulator on my alternator and i was wondering if anyone can provide me with a video DiY or something like that as right now i am really tight on money and can't afford taking it to the shop . Or if someone could give me a list with all the tools i need it would be greatly appreciated. Also, do i need to remove the belt when i remove the alternator/? As i said i am not that mechanically inclined. Thank you in advance
The vehicle is a 2005 BMW E53 Xdrive 4.4i Automatic