trouble adding latest repo

hi,

I am running linux mint gloria.

I want to add the ubuntu rescue remix to my system then build a live cd.

I am having issues getting the repo to be recognised.

I have copied it as per the listing on the rescue remix website.

however when i add it to synaptic it has issues downloading info.

it says it cant find the private key for the repo.

how do i fix this so i can download the rescue remix package?

You can just install the

You can just install the packages without the keys. But here they are:
http://ubuntu-rescue-remix.org/files/URR/PPA

synaptic wont let me add the

synaptic wont let me add the repo without the key/keys.

so how can i then install the packages if i dont have the repo added?