You'll need a synchronizer the the correct nature. Copy and pasted your seed into the main screen of RNG Reporter and select Method K if you are going to use a synchronizer. Then select "Wild Pokemon" or "Stationary" depending on what you are abusing for. Enter the exact IVs and nature, then click the shiny only box. Go to "4th gen tools" and select "seed to time" and put in the year and seconds you want as well as noting if you have any roamers released.
I set my DS clock back however many minutes EonTimer tells me to. When the first timer ends, I press "Yes" on the load codes screen of the AR. I then filled out all the info to start a new game and pressed A until the Oak says "I'll see you later". I pressed A for the last time when the second timer hits 0. Then, I entered the ID I got when I started the game into the ID space in Pandora's Box. I entered the delay I got into EonTimer and adjusted my timer accordingly til I got it.
I RNGd my ID/SID, so I looked here: http://www.smogon.com/ingame/rng/dpp_rng_part4
and found a spread along with its PID. Copied the PID, pasted it into the PID space in Pandora's Box. To get to it, click " 4th Gen Tools" and select "Pandora's Box". I then pressed search and got a list of IDs and SIDs.