Anyone please help me,

after i read and try it, i got stuck in step 3

http://wiki.zimbra.com/wiki/Installing_a_GeoTrust_Commercial_Certificate

I got 4 file from geotrust

1. domain_cert_2013xxxxx.crt
2. domain_interCA1_2013xxxxx.crt
3. domain_interCA2_2013xxxxx.crt
4. domain_root_2013xxxxx.crt

Step 1
1). move all the files in /opt/zimbra/ssl/zimbra/commercial

cd /opt/zimbra/ssl/zimbra/commercial/
tar -czvf /tmp/ssl.commercial.tar.gz *
rm -rf *


Step 2
2. generate a new csr , please edit this line for your company details

/opt/zimbra/bin/zmcertmgr createcsr comm -new "/C=US/ST=TX/L=Somewhere/O=Company, Inc./OU=ChangeMe, Inc./

i using administrator console to generete csr, because if i using that command the Key size (bits) not 2048

Step 3
3.) get it signed

Place SSL order and paste in the contents of commercial.csr
Put the certificate into commercial.crt using cat or vi


in this step i don't understand what is SSL Order?
is it file when i'am sending to geotrust (commercial.csr) or all 4 file i receive from geotrust?

can you describe to me the step 3 with my example?

thanks before