Keep in mind there is a difference in "native" status. First Nations and Aboriginal/Metis are two very difference status. From what I take from your post, you are likely seeking Aboriginal/Metis Status. Has someone in your family already received their status? If so, all you need to do is reference them, if not, you will need to complete some genealogical work. You'll need to find some mention of aboriginal in your family's past. Perhaps this will be found on a birth, marriage or death certificate. This is the key you need.
It is extremely important that you gain your status since any of your decendants will likely be omitted in the future since the government wants to phaseout the grandfathering. It is likely that in the future, your parent will have to have the status for their children to get the status. Don't quote me, but I believe the cut off date is the mid-1980s (date of birth).
I received my status earlier last year. I am part of the Eastern Woodland Metis Nation of Nova Scotia (since this is where my ancestors were from). I am also the web administrator for my Nation's website -
www.easternwoodlandmetisnation.ca