Cathy,
 
Are you running Adobe Acrobat or something else for PDF files?  Acrobat has the DDE (Where the print buttin comes from when you right click) code to print directly.
 
If your using something else to view PDFs then that application needs to be set up.
 
Acrobat uses a bunch of registry entries to do DDE since it can be a container and a server so I can't give you the entries.  
 
If your using Acrobat,  Unistall and reinstall.  If you are using something like CutePDF,  You can use Adobe Acrobat with it as a viewer.
 
Hope it helps,
 
Tim

Cathy,
 
To get to DDE open explorer, choose tools and folder options.  click the file type tab and enter PDF to get the dde entry for pdf files.   click advanced and you should have an entry for open.  
 
Even though DDE is checked there is no DDE message because it's call in the registry.  
 
Are you an administrator on the system when you installed?  If not that can be your problem.  
 
If you messed with the DDE settings before you uninstalled and reinstalled, you may have to delete the DDE settings,  the acrobat plugin and then do a detect and repair within acrobat.
 
Hope it helps,
 
Tim

Cathy,
 
It looks like you have a problem with DDE and your system is using arg(v) arg(c) (old DOS command line system).  
 
Let me do some checking on what system services need to be running for DDE to work correctly.
 
Tim

Cathy,
 
It could be.  The one in bold is the default method with a double left click.  The second is the generic Windows Open (when you double click a file and it says there's no program associated with it.)  You could have had a differnt association with PDF files from a previous app or install that does not allow the print command.
 
What I would recommend is uninstalling Acrobat,  Deleting all acrobat directories (c:\program files\adobe\acrobat xx)  Delete all the DDE/Ext links.  Edit the registry and delete all references to adobe (ONLY IF YOU KNOW WHAT YOU ARE DOING AND DON"T HAVE ANY OTHER ADOBE APPLIATIONS INSTALLED!)
Your PDF files should look like an unknown file type and a right click open should ask you for the associated app.
 
Then reinstall.  You should only have an "open" under the DDE entry but a right click should have Open with Adobe Acrobat, Open(Generic Application), and print.
 
Hope it helps,
 
Tim