You can only do one burst at a time because the HD2 needs time to send them to the card.
There is a way to do what you want.
Set your HD2 to video mode at 1080p 30fps and take the footage.
Add the footage to a edit program and make an image for each frame you want.
I use Serif, MoviePlus and it has a button "Save frame as image" (Camera icon).
You get 30 images per second, so just select the ones you want.