Hi,
Yeah, I did these and they are awesome. The info is pretty relevant and within about 1.5 months they send you a certificate for one product on medsite.com (usually). Mediste has books, equipment, etc. I got a couple really excellent books using those vouchers.
I don't know how to find out more teleconferences. I got a couple numbers from a chief resident I was working with. He was extremely cool and gave me a list of like 6 or 7 of them. They have all expired by now, but I am sure more start all the time. Ask around at your hospital and maybe ask some drug reps you run into. I am sure they would know. If you happen to find a website that has some, please share the info with the rest of us.
Good luck,