that uses the gnome2 burner "Brasero" , as i recall it has been busted for some time ( and still is )
yum install k3b
but the older RHEL 5 -(the current is 5.10 ) will only have the rather old kde3 version
what version of the older rhel5 are you using ?
will output your version
as i recall the "drag and drop" years ago in rhel5 never worked well ( but 5.6 was the last i used before installing CentOS6)
have you looked on the Redhat knowlage base
you DO have the paid for required!!!
support contract ?
that gets you access
login to the redhat site with the credentials you set up with the required license and search for "burn cd / dvd"
-- for rhel4 but basically the same
also what dvd's are they ?
dvd +r ?
dvd -r ?
dvd +- r ?
dvd rw ?