If you have a product like dazzle (which sucks in my opinion) and if you have a usb on your computer (laptop I hope) then you can do it. I have a product from DataVideo that lets me bring in analog video into my computer through firewire. That is the best quality I have found so far. It converts analog video to digital. Otherwise I would use a camcorder out on the field.
http://www.datavideo-tek.com
Product: DAC-100