Visual Studio 2005 Express Edition license

I am thinking of using Visual Studio 2005 or 2008 Express Edition for some commercial use. Where to download it. And is it necessary to register it ? Where to register? Thanks in advance... can i deliver my application to users before register ?

Using the express editions is legally okay. I'm using them with my (private) notebook when I'm doing things for my employer. But there are some disadvantages, e.g. you can't use add-ins like visual assist or FogBugz for VS, ...

Perhaps you're better off with Bizspark

You don't need to register and yes, you can deliver your app any time with no restrictions.

Please see: http://www.microsoft.com/express/default.aspx

You don't need to buy license for that, but if you want to register it, it is free and there is an article showing how :

Instructions for Downloading and Installing Visual C# 2005 Express Edition