As part of my SharePoint work (especially when working with SharePoint claims and ADFS v2.0) I need to configure Active Directory Certificate Services.

Part of this means setting up AD CS to issue Web Server certificates (i.e. SSL certificates). So for my benefit rather than yours(!) here's the step-by-step guides and core understanding your need to set this stuff up. Part 4 is the bit I'm usually interested in but I've included the rest here as it's a good series of articles.

Designing and Implementing a PKI: Part I Design and Planning

Designing and Implementing a PKI: Part II Implementation Phases and Certificate Authority Installation

Designing and Implementing a PKI: Part III Certificate Templates

Designing and Implementing a PKI: Part IV Configuring SSL for Web Enrollment and Enabling Key Archival

Designing and Implementing a PKI: Part V Disaster Recovery