How can I save a document on the desktop with a macro using a text  
selection from the document?

In Nisus Classic I used this:
Copy
Save
Paste
Enter [this would simulate the Enter or the Return key, I have  
forgotten how this macro command exactly looked like in Nisus Classic]

Now, in NWP, the macro will just open the Save-Dialog and then stop.  
Nothing will be automatically pasted. The Save-Dialog remains open  
and I can paste with the mouse by going to Edit > Paste or paste  
manually with Command + V, but I want that to be done automatically.

Is there any way to automatically paste in the Save Dialog? Or, if  
not, which other macro command do I have to use in order to  
accomplish this task?

Thanks in advance,

Þorvarður
OS X 10.4.11
Power Mac G4