I've found a website where an Office 2007 UI Renderer was offered. I must say, its great and free

Just a simple dll file is needed and one line of code, thats all. It gives your application the cool Office 2007 UI Look.
Product : NetExperience Office 2007 Renderer Engine
Website :
DBSsoftware [German]
Download :
here (33.9KB)
GeSHi (vbnet):
Imports NetExperience.Windows.Forms.Tools.Design
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ToolStripManager.Renderer = New Office2007Renderer()
End Sub
Created by GeSHI 1.0.7.20