I've already inquired about this in the simple answers/requests thread, but as this inquiry is particularly RNG-oriented, I figure it may behoove me to cross-pollenate for optimum results.
I've heard of RNGing for specific SIDs, but have no idea how to do it, nor have I any clue as to how one might go about finding which SID would force a particular seed into shininess.
My example is as follows: Having no possible, let alone suitable or even decent, shiny seeds off of my Platinum SID, and given that the encounter slots for headbutt pokés in HG/SS have yet to be mapped, I have decided to devote a scarcely used copy of Diamond to acquiring a shiny, FLAWLESS, Female, jolly/timid (whichever I find first really) Aipom in a premier ball.
Were the ball not an issue, it would be a fairly straightforward BP, but alas, 'tis a point of pride. Is this even fucking possible (without months of trial and error), or have I been misled?