IT in today's economy: Spotlight on Cost
Here's a useful site that showcases tools and technologies for assessing your infrastructure and optimizing costs. Poke around a bit and learn about optimizing server, branch, desktop, and virtualization architectures. For example, see the following best practices for desktop optimization:
In addition, here are some tools to help:
Get started with free tools and guides for Desktop Infrastructure
Optimize Your Desktop Infrastructure
Desktop Optimization using Windows Vista and 2007 Office System