Omar beat me to posting this tip on adding a slickrun command for the new Google Maps.
Cheers Omar! I guess you have to get up pretty early in the morning to beat those pacific coast dwellers to something when you're living in the Colorado Mountains.
That said, I feel no shame for posting this
Open Slick Run. Use the magic word ‘add’ to create a new word

Use the following info
magicword=map
filename=iexplore.exe
parameters=http://maps.google.com/maps?q=$W$

Now use your new ‘map’ keyword in slick run.. While you're at it, Donate, because Eric Baydenis the man.