Xp Deleted From Boot.ini

what's happened here is that on a failed attempt at reinstalling XP with a copy (after restart it asks to insert the XP SP2 disc) I went into boot.ini to delete the "windows xp professional setup" option but accidentally removed the actual XP entry instead. Now it gives me no option to start the computer normally, even when going through safe mode, the only option is to start up with the XP Set up. Is it impossible to get into the computer through the OS now, because none of my XP Set Up discs are working as they're all copies, my original is now in another state with my father.