changed some urls on my site makeover

Need to direct people to correct urls, don't know how

[Artsyrat]

Hi,
I've have made many major changes to my website and in the process felt it was needed to change a bunch of urls in the process. (I'm aware of the implications, but I felt it was necessary to do so, cleaning house, organizing etc.). The primary urls have not changed. What I need to do now is redirect folks to these new urls on the 404 error pages. At least that is what I think I need to do. I do not know how to make or where to put custom 404 pages. I checked out the info at my host and could not find anything to help me on it.

[g1smd]

The redirects are done at the server level to redirect URL requests such that the browser is told to request a new and different URL.

Once a 404 page has been served, you have already said "nothing here" and it is far too late to be thinking about sending a redirect.

That is, you can either say "it is over there" or "nothing found". You can't send both status codes. It is always one or the other.