Best way to Create GMap of Nodes?

If this has been covered already, please point me to the right place.

Using CCK, I created an "office" content type. Users can create an "office", including its street address. And I'd like to create a Google Map that plots all of the office locations on a map. I'm toying w/ the "Locations" and "GMap" modules but I'm not sure if this is the best way to go. For one thing, the "Locations" module is a pain to use with CCK, because setting its display weight doesn't seem position it with respect to other CCK fields.

What modules should I use? Is there a tutorial or a how-to on this?

Thx....