Please help me to untar a gunzip file

[Geetha Palanisamy -X \(gepalani - WIPRO at Cisco\)]

Hi There,
 
I have a file called x.gtar.gz.
My installation guide says me to do the following to untar the file...
gtar -zxpf x.gtar.gz
and then 
gtar -xpf x.gtar
 
But i am not able to execute the command  on my solaris machine which
has the Solaris 8 installed. 
 
Instead I was able to unzip with the command
gunzip -c x.gtra.gz | tar -xv
 
But while i continue with the installation , it says me that the
packages related are not found. So i suspect that the file is not
properly untarred.
It would be great if someone could help me out of this issue.
 
Thanks /Geetha