accessing designtated adult areas

> i have been running windows xp for 2 yrs now with never a
> hiccup. just recently tho, i have found that i am not
> longer able to acesss anything in Yahoo that is deemed
> adult, over 18, This includes yahoo profiles, yahos
> groups, etc if they have been deemed an over 18 adult
> site. I cant even get into a group that i am a member of.
> I guess its important that i say that i am 51 and
> registered as such with yahoo. When i go to visit a
> personal profile for example, if it's designated adult, i
> get the normal page asking to certify that you are over 18
> by entering your yahoo id and password. I do this as
> normal, but now it just goes back to the page stating that
> it is an adult site.
>
> I am really kind of ignorant with computers, but here are
> things i have tried to no avail. i contacted yahoo help
> section by email and got form letter instructions as to
> how to open a profile. I have uninstalled and reinstalled
> Yahoo messenger. I have used the system restore to no
> avail, all that accompished was losing my arhcives. I even
> have tried reducing every bit of security to a minumum in
> case it was a security problem. It sounds a lot like one
> of these child proof filters has been installed, but i
> really dont know what to look for. Any help out there?