What do you need to create a WCF service from scratch?
You can either create a WCF service in Visual Studio 2008 or you can also create a WCF Service with Visual Studio 2005 as well. What do you need ...
1> Visual Studio 2005 extensions.
2> .net 3.0 runtime (redistributable package, not Service pack release or 3.5)
This will get you the templates needed as well for you to quick start with you creating your WCF service. You can find the SDK for the same on msdn site too.
Happy servicing :) Thanks - Dipesh