OK, you probably know it by now … there is a whole lot of stuff writte in nice angle-brackets, but there is way to little intellisense support for all this.

Just like others (NHibernate, WCF) the solution is quite simple: just copy the appropriate xsd file to C:\Program Files\Microsoft Visual Studio 9.0\Xml\Schemas\1033. In this case the MSBuild.Community.Tasks.xsd can be found in C:\Program Files\MSBuild\MSBuildCommunityTasks.