Do I need a new board to upgrade from 30gb to 80gb?

No, you do not need to change your logic board. Well, probably not. You need to check your logic board, right under the LCD cable is a number that starts"Apple 820-XXXX" If your says "820-1763-A" then you have a first generation iPod video and you can only upgrade to a 60GB drive. Anything above is not supported.Make sure that your HDD is supported, and try to stick with the same brand. i.e. Toshiba, Hitachi etc. Otherwise you will run into trouble with the HDD cable. I would get a new one as well, only a few bucks but will safe you from a headache later on. Also, watch the thickness of the drive. The original 30GB is a 5mm drive, anything thicker will require some more parts. It does sound complicated but it is really straight forward. I have done plenty of those and have not had any real issues. Hope that this helps, good luck.