I've been away from WoW for a while and need help with raids, which I'm sure have changed. I'm lvl 67 and I swear there were a few raids I could do, but I'm not 100% on that.

I have BC and WtLK, not Cata, what are the new raids and required lvls?

I don't do much raiding anymore myself, but there are a couple things I could maybe answer for you.

The new raids are all lvl85. All the new raids are always introduced and are available to only the top tier of players.

Now, friendly and/or achievement hunting guilds will do older raids from time to time, and you could tag along. Although, to be frank, levelling is much easier nowadays and you should find yourself advancing to 85 in maybe a week or two of casual gaming.