Is it possible to add more cards and still play multiplayer?

Hi can anyone tell me if it's possible to add more cards to the 2010 iso verion and still play multiplayer games?
I'm still missing a lot of cards from series like the legends and the dark.
These are in the christmas update but i can't seem to get the multiplayer working with that one.
Also i'm not really getting what the limited and constucted versions of manalink are for?
Thanx
Nuka
I'm still missing a lot of cards from series like the legends and the dark.
These are in the christmas update but i can't seem to get the multiplayer working with that one.
Also i'm not really getting what the limited and constucted versions of manalink are for?
Thanx
Nuka