Need a registration code for ANY PDF to DWG converter

Hi,
If you need to recover it as fast as it possible install Recovery Toolbox for DWG , this thing is able to help you. But it's not free. Download free demo here:

http://www.dwg.recoverytoolbox.com/
As one of solutions I can advise you to try to open your files in MS Visio, Compass or using another program which could open dwg file. Or try to recover them using AutoCAD recovery function.
Also you can read here about dwg file corruption:

http://www.filerepairforum.com/forum/cad-tools/cad-tools-aa/dwg/561-how-to-recover-autocad-files-from-flesh-card

1. Close AutoCAD.
2. Install a free PDF Reader that incudes a virtual PDF printer. (Like NitroPDF)
3. Make the Virtual PDF Printer your Windows Default Printer.
4. Start AutoCAD & Plot/Print to the Default Printer, just like you print to any other printer. During the printing process, you will be asked for a file name & location to save the 'Printed' PDF file.

Cracking computer DRM systems is illegal.

auto DWG Pro Registration code 2011

http://download.cnet.com/free-pdf-to-word/3000-2079_4-10849566.html

hope this helps

Try other PDF Converter program.
What i use now is Tenorshare PDF Converter. it is a 5-in-1 PDF utility which helps you batch or partial convert PDF files to editable Words, or converts Word documents, PowerPoint presentations, Excel Spreadsheets to PDF files at one time.

The easiest way I've found is to use CutePDF. It installs itself as a virtual printer, only when you "print" to it, you get a PDF document output. Download it for free here http://www.cutepdf.com/products/cutepdf/writer.asp

Tenorshare PDF Converter is a 5-in-1 PDF utility which helps you batch or partial convert PDF files to editable Words, or converts Word documents, PowerPoint presentations, Excel Spreadsheets to PDF files at one time.

A COUPLE OF SUGGESTION

Now you can protect your works with this DWGLock software, the entities in the send out drawings can NOT be copied nor changed. However, recipients can open up the drawing, add lines and markups. Only the drawing owner allows extracting the drawing, if they need to, enclosing the added part with the native drawing. This is ideal solution for the collaboration needs and contractors.
It is a stand-alone application, no AutoCAD required; Supports AutoCAD R2.9 thru 2009 drawings. about $330.

CADLock, Inc. continues to create innovative solutions that enable you to maintain control of your intellectual property and share it with those who need it. We invite you to download and evaluate CADVault® for AutoCAD® to find out how digital rights management can work for you. THIS MAYBE PRICY also

Acme CAD Converter Acme CAD Converter is a dwg/dxf/dwf format conversion software for batch and vector files. It can conveniently convert DXF,DWF and DWG files into BMP, GIF,JPEG, DXF, DWG, SVG , PDF, HPGL etc., and also enable the conversion between DXF and DWG file versions (R2.5-R2005).