I came to the forum looking for a solution to this shortcut problem as
well, and I see that there are three principal suggestions:
1. Macro
2. A series of keystrokes
3. Add button to toolbar
I wanted to add to #3, that once you add the "Paste Values" button to
your toolbar, it's possible to turn it into a two-key keyboard
shortcut. Just open up the Tools->Customize Menu, right-click on your
newly placed "Paste Values" button, and fiddle with the ampersand (&)
in the "Name" field. If you set it up to a letter that isn't already in
use (for me, it's "A"), then voila! You now have a keyboard shortcut
using the ALT-key plus that letter.
Hope this helps someone out there.