atul@atul:~> rpm -qa "mozilla-nss*"
mozilla-nss-3.11-19
atul@atul:~>
 this it shows------------
now am trying to install mozilla-devel:=

atul:/home/atul/Desktop # ls
04 I  LOVE  YOU.mp3                    mozilla-nss-3.11.1-2.1.i586.rpm
mozilla-nspr-4.6.1-20.i586.rpm         mozilla-nss-devel-3.11.1-2.1.i586.rpm
mozilla-nspr-devel-4.6.2-2.1.i586.rpm
atul:/home/atul/Desktop # rpm -ivh mozilla-nss-devel-3.11.1-2.1.i586.rpm
warning: mozilla-nss-devel-3.11.1-2.1.i586.rpm: Header V3 DSA signature: NOKEY, key ID 71423d59
error: Failed dependencies:
        mozilla-nss = 3.11.1-2.1 is needed by mozilla-nss-devel-3.11.1-2.1.i586
atul:/home/atul/Desktop #


this is waht error it gives as this result am not able to get any directory with name /nss in my /usr/inclde

plz help me.