Problem about CA Issue Certificate with LDAP

Hi all, I'm a new comer, I'm trying to config a CA with LDAP follow this site http://www.openldap.org/pub/ksoper/OpenLDAP_TLS.html#4.2. 4.2 CA Issue Certificate When going to step 4, I have receieved an error messeage. root@ldap:/usr/local/openssl/bin# /usr/local/openssl/ssl/misc/CA.sh -sign Using configuration from /usr/lib/ssl/openssl.cnf Error opening CA private key ./demoCA/private/cakey.pem 665:error:02001002:system library:fopen:No such file or directory:bss_file.c:356:fopen('./demoCA/private/cakey.pem','r') 665:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:358: unable to load CA private key cat: newcert.pem: No such file or directory Signed certificate is in newcert.pem I think it's very simple, but i don't know how to solve it. I have tried to many ways but fail to fix it. Maybe i don't understand about the CA Certificate. I... I am so confusing. Please help, khanhnq -- *********************************** EVERYTHING HAS JUST BEGUN...