Cookies

Does anyone know if a person has to have the "cookies" turned on in their computer in order to work with Yahoo Groups? For some unknown reason, I am no longer able to enter my Yahoo account and change things. It wants my password. I tried changing it three times (too many) and it still doesn't work.
After taking me around the Mulberry Bush, it finally said cookies had to be activated in my computer. Do you know if this is true? Do all Yahoo Group users has the cookies option activated?

I've used the account for probably 4 or 5 years, or more. I tried emailing Yahoo to ask for help, but it wanted my password to send an email. And that doesn't work!

Thanks for any assistance...I'd like to get around this frustration!

Sharon M