Let the hive mind of Engadget get that for you.
"I've found myself using my PC for a lot of conversations lately, and I'm also considering recording a podcast to share with anyone who will listen. There are tons of USB headset / microphones out there, and I'm hoping someone has some solid recommendations based on experience. I'll consider both headsets and standalone mics, by the way, but I'd like to keep the bill under $100 if possible. Help!"
VGA seems kinda limiting, though. I suppose there's only so much screen resolution you're going to pack into what I assume is an analog NTSC video signal on the cable. I don't think the Apple TV or anything else that would connect to your set via HDMI has anything to worry about.
The VGA port can support 1080p and the ZVBox signal is QAM so it can also support HD. The limiting factor is that your TV must support QAM to use this.