Hello Alonso,
Thanks for posting your question to the A360 Drive forum. I used Google Chrome to translate your message.
>>>Greetings.
I can civertir pwf to dwg or some other type of file that can read autocad files.<<<
Are you asking about trying to convert a DWF so you can open it in AutoCAD? If that is the case you are probably looking for the AutoCAD forum.
http://forums.autodesk.com/t5/autocad/ct-p/8
I would also add that AutoCAD has the ability to attach a DWF file like an image. Just type "XREF" at the command line and then right click on the reference manager. Then select DWF.
If you just want to view a DWF then youc an use A360 or A360 Drive. You would just upload the DWF file to the site and then view it in your WEB Browser.
A360 Drive:
http://360.autodesk.com
A360:
http://autodesk360.com
Hope this helps answer your quesiton and if not please let us know more details.