Welcome back to the forums, MeganmanC! It's really great to see that your back in the forums. Sucks that you've went away for a very long time, can't believe you still remember your account here, as I don't remember accounts that I've used for almost like three years, it's been so long! This time though, I always make sure to write it up on my diary so that I wouldn't forget. And hopefully this time, you wouldn't leave us hanging around again! ^^:;
I guess you could ask someone in the Trade Corner if you'd like. I don't have DS at the moment since it got broken but I do have an extra Mew on my HG/SS files. But don't you worry. I'm sure someone nice there would give you a Mew for free! It's really easy to get 'em and breed 'em and stuff.
Anyways, I'm sure there have been a lot of changes since you left, such as the new boards that your not familiar with. But anyhow, if you've been here before, it's still the same PC that you'll get eventually used to again! The B/W section would really interest you as your playing B/W right now, anyway who did you picked as a starter? I'm just really curious as to whom people had chosen. But yeah, you could visit that section if you have any questions or if you need any help regarding the game. You could also write off a journal and post it in the journal thread!
If you ever made friends before, I hope you get reacquainted with them. Although I'm certain that you will be able to meet new faces here and possibly make a whole new bunch of friends! And it isn't bad too! There's a lot of nice people around, so I doubt it if you couldn't make even a single one! :o
Make sure to give the rules a reread, there have been a lot of changes before especially with the new signature rules that had just been updated a few months ago. And I'm sure you don't want to get into trouble, eh? And soo...
Have an awesome time here at PC and I hope you'll stay active! ^^;;