4)In the Actions menu on the right, click on Complete Certificate Request... The certificate wizard will be initiated.
5) Browse to your_domain_name.cer file, that you would have created by pressing the ... button
Friendly name: this is not part of the certificate itself, but it is used by the server administrator to easily distinguish the certificate.
Location: Select the Personal certificate store.
6) Click OK. This will install the certificate on the server.
Assign Certificate to Website
In the Site Bindings window, click Add... if the default https entry is not there.
Fill in the different fields as specified below, then click OK
Type: select https.
IP address: should be the IP address of the site or All Unassigned
Port: default is 443.
Host name: leave blank
SSL certificate: it should specify the SSL certificate that was installed in previous steps.
Your SSL certificate is now installed!