hi,
I already solved it myself. I just created a custom report.
Select Top 1000000 tblComputers.Computer, tblComputerSystemProduct.Name As Model, tblComputers.LastknownIP, tblComputerSystemProduct.IdentifyingNumber As Serial From tblComputers Inner Join tblComputerSystemProduct On tblComputers.Computername = tblComputerSystemProduct.Computername Where tblComputerSystemProduct.Vendor = 'Lenovo' Order By tblComputers.Computer, tblComputers.LastknownIP
This is not exactly, what I wanted, because I wanted to have the serialnumbers in the section "Computer Model Overview" --> (in this case) "Lenovo" in the Webgui, but it is ok.