Using a MiniDVD or HDD Camcorder for streaming-USB 2.0???

[HunterPlatinum]

hey guys i wanted to know if it is possible to use a MiniDVD or HDD camcorder for webstreaming.
I plan on using www.ustream.tv for my broadcast but have noticed that the MiniDVD and HDD cameras only have a usb 2.0 connection.
I plan on using my MacBook Pro and am not sure if i should purchase any of those camcorders in fear that it will not recognize them. I understand that MiniDV tape camcorders will work due to the firewire connection but i am yet to find a MiniDVD or a HDD camera that used firewire..

thanks for any input.

HP