Don't understand Keybinding or Priority at all.

[pearldrake999]

So, i found some nice Prioirty Macros for a Frost DK that are set up on keys 1-6, Now, spamming keys 1 through 6 with my fingers nets a nice bit of DPS for my level, however, I am trying to figure out a way to spam keys 1 to 6 with one button mash.
Is this possible? If so, how can I do it?
I really, really need an idiot proof guide if so.

Thanks for reading.