Can anyone suggest a good Inventor converter where it the .IPT or .IAM file and converts it to a AutoCAD (DWG) 3d model file.

Inventor itself can export 3D DWG models. Or do you need a standalone tool?

Hi,
I want to convert an stl back into ipt. can u suggest some simple stuff please?
thanks

Thank you can you please walk me through the process of converting a inventor iam file into a 3d dwg file. This would be greatly appreciated.

As for the conversion to DWG - see the tip:
http://www.cadforum.cz/cadforum_en/qaID.asp?tip=5165
 
There is no direct way from STL to IPT/Inventor but you can use our online tool to make 3D DXF and then read it into Inventor. See:
http://www.cadforum.cz/cadforum_en/how-to-convert-a-stl-file-back-to-autocad-or-inventor-tip7536