FD_SETSIZE for Redhat Enterprise+Plesk7+Apache2

I need to to rebuild Apache2 with a larger FD_SETSIZE (currently 1024)

I have Plesk7 and Redhat Enterprise.
I run 500 swebsites ( no traffic on it ).

My "ev1" proveder Has told me " You Must do it your self, or go to another hosting co."

I never did it before.
Can anyone help me "how to do" ?

Please.

 

 

 

 

Top