Print Macro

That's a start.

I don't have time to really look into what you would have to do next, and your entire macro will be kind of large and tricky.

I'd use the File Scripting Object (FSO) to read and interact with files and folders.  Something like:

1. Create objects and assign objects and variables such as FSO, SLDDWRKS, Adobe, and strings to hold folders and filenames.  Maybe even get creative and add integer variables to count how many .slddrw and .pdf files there are in the folder, and each time one prints count increments by one, and have a progress bar on your form and update it... to give user feedback so they don't think your macro froze.
2. Create a nice user form to hold status bar, a button to launch to FSO to get a folder to print, a "GO" button, and maybe even a label or text box with the path & filename BEING printed...
3. Get folder to print from user.
4. For each item in folder
   1. if Solidworks drawing file = true then
      1. open in solidworks and print
   2. if .pdf = true then
      1. open with Adobe Acrobat object and print
5. Loop till all files have been printed / checked to see if they are printable.
6. Msgbox to notify user that all files printed/or we are done/ or something went horribly terribly wrong and they may need a new printer....(ok the last bit was a joke...I hope they don't need a new printer after your macro runs )

Sorry I can't post code examples...