Install SSL Certificate in Microsoft IIS 5.0
Step 1: Install CA Certificate
Step 2: Install the SSL Certificate
Choose the appropriate Primary and Secondary Intermediate CA certificates based on your SSL certificate product.
The Certificate Authority will email you your certificate. If the certificate is an attachment (Cert.cer), you can use the file. If the certificate is in the body of the email, copy and paste it into a text file (such as OriginalCert.txt) using Notepad. Do not use Microsoft Word or other word processing programs that may add characters. Confirm that there are no extra lines or spaces in the file. If necessary, move the file to the server machine.
1. Open the Internet Services Manager or the Microsoft Management Console (MMC) containing the Internet Information Services snap-in.
2. Expand Internet Information...