Microsoft suggests the following changes to web.config for your SharePoint installation if you want to enable AJAX functionality. http://msdn.microsoft.com/en-us/library/bb861898.aspx
However it is easier to use this Feature and activate it through SharePoint central administration. Benefits are that it both creates the changes when you activate and undo the changes when you deactivate. And from a deployment [...]
YES, SharePoint Designer serves a purpose. However think for yourself a bit before you decide to make your changes to a page with SharePoint Designer. The minute you made changes to a page it is unghosted and saved in the database. If you provision these changes to new web sites you will struggle if you [...]
It seems like when you create workflows in Visual Studio and deploys them to SharePoint you have to consider the environment you are deploying them to. In the feature.xml the ReceiverAssembly and ReceiverClass are specified if you want to go for the MOSS 2007 deployment. Remove the lines in bold if you need to deploy [...]
A good to have link is one where you could quickly find the differences between the editions of SharePoint and even more important the differences between a SharePoint and a WSS 3.0 install.
http://office.microsoft.com/en-us/sharepointtechnology/FX101758691033.aspx?ofcresset=1
