3 Way Calling and Wifi Questions

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I am new to this site and yesterday I bought the Imagio, my 1st Windows phone. So far I am very pleased with it, especially after reading on other forums about the complete dislike for windows devices.

My first question has to do with making a 3 way call.
I had a Storm and while on a call I could press a button and add another person to the line. Can this be done on the Imagio?

Secondly, I turned on Wifi at home at it found my wireless network but would not connect, it asked for a "network key".
I have an ipod touch and it connected right away when I got it and just needed to put in my password.

Any help on these 2 issues would be appreciated.
Thanks