(I don't know if it is important, but I am using Aquamacs - and yeah, I am a newbie)

When I want to open a file I use C-x C-f and usually just chose my home folder. From there I go clicking on folders until I find the file I want. I really don't like thought that each new file I open creates a new buffer. This is especially annoying because I am using Aquamacs with the window (tab) option enabled. I know I could simply get rid of the window option, but I quite like it, except of course for when I open a file and a zillion tabs are created.

So my question is: is there a way to disable the new buffer creation when "navigating" through folders?

Thanks :)