Question : looking for upgrade tool / manual CRM 3 to CRM 4

I want to do an upgrade from CRM 3 to 4. Where do I find an upgrade tool / manual CRM 3 to CRM 4?

Answer : looking for upgrade tool / manual CRM 3 to CRM 4

Please refert to this article
it gives the information required for upgrade
http://blogs.msdn.com/crm/archive/2008/05/01/upgrading-to-crm-4-0.aspx
or refer to this URL
https://community.dynamics.com/blogs/crmfranklee/comments/10445.aspx

You could also get more detailed information
Microsoft CRM 4.0 Implementation Guide - Installing Doc, Section: Upgrade from Microsoft Dynamics CRM 3.0 Server