Superman suit Man of Steel

I'm amazed that such an ancient ship was even COMPATIBLE with Jor-El's computer program. Are you telling me that Kryptonian technology hasn't changed in 20, 000 years?

You're basing the question on human technology. Though there's no way to definitively answer this question, I pose that maybe Kryptonians had simply designed a computer system that was infinitely backwards compatible, or that computers were able to accomplish all that was needed and that the focus was more on colonization and not technological advancement (after a certain degree).

Considering that, how did holographic Jor-El make a Kryptonian suit & cape with the insignia of the House of El appear on that ancient ship? And it was tailored to fit his son's body?

This is why I'm here... Nowhere in the movie does it say that Jor-El made the suit. When he's giving the backstory, Jor-El diagrams show the explorers wearing the symbol of the house of El. Just after showing the suit, he tells Clark that the symbol of the house of El means hope. What I took from that was that the colonists wore the symbol of hope as they explored the universe and the house of El had simply adopted that symbol as their sigil. The suit was already there for the explorers on the ship (3 of which we know died) and Jor-El simply opened the pod containing it.