Dell 2007 Models

I am very not pc knowledgable so require help eek!!!!!!!!! I have recently had my Dell Inspiron stolen it is a 2007 model. However, I do not know which and all literature pertaining to it has been stolen also. I would recognise a pic if saw it. I know the spec was good and unfortunately without such info my insurace will only issue a basic model  by Advent who I've never heard of!!! How can I find a list of the model numbers and the spec. It was def a 2007 model with good memory but that in it self isn't enough. Thanks guys :emotion-1: