FRANS said that I can create an LPT template to reteive project properties (like the project name). 1- Can I have an example of such a template (preferable in VB.NET) 2- how to use the LPT template as an addin template in a TDL template?

The .lpt template:

Public ReadOnly Property ProjectName
    Get
        Return <%=_executingGenerator.ProjectDefinition.ProjectName%>
    End Get
End Property

You then bind that to a templateid in a templatebindings file, say Include_ProjectName and use that templateid as an include statement inside a TDL template:

' your TDL code here

' include the .lpt template
<# Include_ProjectName #>