Sharepoint - Cost of SharePoint Licenses

SharePoint licensing is almost a black art. You can get an idea of the list prices but things vary depending on how many people, who you buy it from, and how it is licensed.

Here is a good calculator, but understand what you are clicking. http://community.bamboosolutions.com/blogs/sharepoint-price-calculator/default.aspx

With MOSS you need CALs. There is a Std CAL and then if you use MOSS Enterprise there is an add-on Enterprise CAL.

There is no one server topology. Everything depends on what you plan to do with it, how many people, etc. I generally don't like to use 2 server deployments (SP, SQL) even in non-production environments. You are better off getting two smaller servers and separating the roles in most cases.

Before I made the jump from 2003 to 2007 for my first MOSS farm I probably spent 4-5 months planning it and taking it through scenarios. I would encourage you to do some homework or bring in an outside expert. Here is a good place to start if you want to read the docs: http://technet.microsoft.com/en-us/library/cc261834.aspx

Mike made very good tips on what you should look for, the best approach is to find a Microsoft licensing partner in your region that can help you find the best licensing. There are many options for purchasing a license, e.g. if you are already under Enterprise Agreement with Microsoft, or if you are under Academic or some other special licensing program...

How do you know you need MOSS? If you need it, do you need Standard or Enterprise? It depends on your needs, and maybe you only need WSS. Check this article I wrote years ago. Which SharePoint edition is right for me?

Some links:

Licensing: http://office.microsoft.com/en-us/products/FX101865111033.aspx

Capacity planning: http://technet.microsoft.com/en-us/library/cc262971.aspx

A Microsoft Partner is probably better able to assist on a budget estimate to implement SharePoint Server 2007.

Hope this helps :)