I know you need an E-reader to get the pokemon in Altering Cave (smeargle, stantler, etc.) but how exactly does it work, cause I'm not going to buy one if I don't even know if I have everything that I need to go with it. I know it goes into the slot in my GBA SP and it said something about sliding a card... kind of like a credit card... what cards are they talking about? the actual pokemon trading cards?

I don't think the cards are available anymore, and I don't think Nintendo sold offered very many anyways in the US.

However, those pokemon can be found in Colosseum.

I've found tons of the cards online. Just do a search for them, thats what I did. Sion is right though, there aren't a lot of different ones offered. You can get them though.

Okay thanks. I was thinking about getting colosseum (because gc is the one gaming system i DO have XP) but i'd have to figure out how to trade from my gc to my gba sp. don't suppose anyone would mind explaining to me how to do that XP thanks though ^^

If you have emerald version, you can also get those pokemon too. That's one of the reasons why I got it so I can have Stantler and Gligar.

ah yes... you can find some of those pokemon on emerald. i do have it, but I lost it v_v and i also lost my ruby game... v_v i'm going to need to go on a game buying spree sometime.. thanks