Veron

I have tried the r2 disk. Nothing happens, It says d/i386 and when you click o.k it just flashes and does nothing

I am setting up my server roles. I am trying to set up DNS Server but it keeps prompting me to insert the SP2 Disk. I have downloading SP2 and tried to use that but no joy. I read on a forum somewhere to download the i386 image and then rename it to iso and then mount it. Still not having any joy. Could someone please advise me how to get this SP2 Installed. I'm scratching my head here as when i check it says 2003 sp2. Any ideas?