Yahoo 404 pages and VBSEO

basic problem details are here:
yahoo and 404 pages - India Broadband Forum

i am seeing that yahoo is indexing a lot of dead pages from my older forum...

i have told vbseo to show visitors a custom 404 page. but reply delivered with this page is 200 which results in search engines indexing the 404 page.

if i tell vbseo to show Send 404 HTTP code it works fine.

can i combine the two options?

You should add this code in your custom php 404 handler:

PHP Code:

           header ("HTTP/1.1 404 Not Found"); 


thanks.