You can have 2 (or more) Skype names/accounts at the same time. I'm not clear what you mean by "join them." The answer to that is probably no.
Please note: I do not respond to requests for help via Private Message.
08-04-2012 21:33 - edited 08-04-2012 21:40
Yes you can have more than one account but you can only fund a maximum of two from the same card:
And this might be a solution for what I think you might mean by "join them"
But this might be easier if you just want to switch between Skype accounts: