Replying to Pc problems +K

i just bought my first camera a few days ago because i really want to get into filming. I bought a canon HV20 off of ns and i really like it but i have a pc and i cant upload my videos. I talked to the kid i bought it from and he said that i could buy an adapter for the camera, but when i went to radioshack today to see if they had one they said its not possible to go from firewire to pc. what can do to upload my videos to my computer? did i just waste $300???