page 404

my host wants to know if there is a way he can have each site he host to have a diffrent 404 page
how do you do that?

Depends on the web server software. If the software supports that feature, it should be documented.

he is useing apachy (spelling)

This

You could either modify each domains root .htaccess file to include,

Where "ErrorDocument 404" Tells apache to use "custom404.html" as that domains 404 page.

Or Modify the Root .htaccess file with the same "ErrorDocument" line only this time pointing to a script that checks what domain the 404 came from and redirecting to the appropreate page.

OR
fisrt add those lines to your .htaccess file

ErrorDocument 401 /errordocs/401.html
ErrorDocument 404 /errordocs/404.html
ErrorDocument 500 /errordocs/500.html

than create an /errordocs at the html dir of the every account which includes 404.html and other custom pages.

he has no .htaccess
he was going to add one some time this week i think

He needs to CREATE the .htaccess file.

Or are you saying he has no access to override these things with a .htaccess?

he has access to the hole thing he owns it but he is going to add one to it so i can use a few programs and have my own 404 page

i have a .htaccess file but if i just upload it will it work?