Apache mod_ssl

• Comodo Guide for CSR generation
• Comodo Guide for installation

Microsoft IIS7

• DigiCert Guide
• Microsoft
• GoDaddy

Microsoft IIS5 and IIS6

• Comodo Guide CSR generation
• Comodo Guide certificate installation
• DigiCert Guide
• GoDaddy Guide

LDAP

• How to add a Subject Alternative name to a secure LDAP certificate
• How to enable LDAP over SSL with a third-party certification authority

Microsoft Exchange

• How to generate a CSR for Exchange 2007 including SANs
• Unified Communications Certificate Partners for Exchange Server and for Communications Server

Microsoft Lync Server, previously Microsoft Office Communications Server

• How do I generate a CSR on Edge Server with Microsoft Lync 2010 Server ?
• How to generate a CSR for Microsoft Office Communications Server 2007
• Unified Communications Certificate Partners for Exchange Server and for Communications Server

Other platforms

• Comodo knowledgebase - CSR generation for various platforms