In addition to Jim's comment about acceptable postings, you might also note that this forum is fairly 'quiet' in comparison to most mac forums - I guess that's because most members here joined TT for another forum(s) and have this one as a side interest.
I don't suppose you've tried the simple expedient of typing "G4", "Aperture" and "Install" into Google, perchance?
Additionally, if you've acquired the application from a peer-to-peer download, I understand that the same sites tend to have discussions or postings about the related activation/hacking.
soi la, soi carré