I'm looking for an essay that I think was by Ray Bradbury. I think the essay was titled "God", or "Creating God", or something like that. The essay is only one page long.It was a science-fiction story about creating a computer that linked
all the knowledge from all the species throughout the universe. Any ideas?!

Maybe you're thinking of "The Last Question" by Isaac Asimov?

Here's an electronic version of the story:
http://www.maddad.org/asimov01.htm

This Asimov story definitely transcends the "one page essay" description, but it is a good story. Worth the time to click over and read.

Kinda on that same line, except the one I'm looking for ends after building the computer and putting all their knowledge together, they ask the computer if there is a God. The computer replies, "There is now." Does that make you think of another one? Thank you so much for your replies, by the way! I greatly appreciate them. Also, The Last Questions IS a great story!!