'unable to load Private Key' error whilst creating TLS Certificates

[AlteredMode]

Just wondering if anyone can help me with this. Been installing CentOS 5.3 and whilst going through the postfix installation and setup instructions on the tutorial on here but I get this error every time....

-bash-3.2# openssl req -new -key smtpd.key -out smtpd.csr
Enter pass phrase for smtpd.key:
unable to load Private Key
4263:error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt:evp_enc.c:325:
4263:error:0906A065:PEM routines:PEM_do_header:bad decrypt:pem_lib.c:425:

Any ideas? Been trying to search for solutions but not really getting anywhere so far. Thanks.

[AlteredMode]

Ok solved the problem. It wasn't pasting the key in correctly when i entered it.