Only calls get you entered in the contest.
The number will be 888-599-CNET (2638) No voicemails.
To do a webcam call, you just call by phone, tell them you have a webcam and then use either iChat or Yahoo IM to set up the video portion.
I have several questions:
Can you email a question and get entered in the ps3 giveaway contest that way, or does it have to be a phone call?
Can you call early and leave a voicemail or do you only want live calls? Again, I'm wondering both if you'll take a voicemail call but also if it will get me entered in the contest if you choose it.
What about video questions? I don't know how to set up a webcam, but we have a usb video cam -- it could probably be a webcam if I knew how to hook it up -- could we use it to record a question and send that in? I'm confident that we know how to do that much, at least.