hi well i have a very weird problem

i have succesfully installed windows server 2003 R2 that was with the disc 1 . then i also inserted disk 2 and continued the installtion process.
its now that my problem starts.!!
as it is i wanted to configure roles onto the server so i go to add/remove components and selected the network services under that i also selected the dns ok. but when the computer tell me to insert the cd of service pack one which i did it says that file not found.
i mean i got the software on 3 cd: 1 is the set up, 2nd is for components and 3rd is about service pack etc...
so how do i congfigure my server !!!!!1 i just cant figure out whats happening!!! please help!!!

i need to configure active directory, dns, wins and application server
so please help me.