samba - Jun 2004 - howto apply a patch to samba 3.0.4

Hi samba users,

how can I apply a patch (post3.0.4) to samba 3.0.4? I got the sources
samba-3.0.4-2.src.rpm and samba-3.0.4.patch and samba-3.0.4.patch.asc
The patch solves an big problem I have. (no backup over network 
possible) I'm using fedora core 1 (i386)

thanks for Your help

Olaf