I just installed MapPoint 2004 under CXOffice 4.1. It installed, and runs, but not all features work at this point. Specifically, the following work
Dragging a selection & then clicking on the map zooms, just as it should.
The "Find nearby places" function works, at least with the defaults. When you try to add more places (i.e. more categories, such as supermarkets, or theaters), checking and unchecking categories doesn't always work. However, if you use the check all button, the it finds all nearby places, as expected).
The zoom slider at the top of the screen works as expected.
"Grabbing" and dragging the map works.
The following don't work:
The route planner doesn't work, nor does searching for a location by address, as they depend on the same code, apparently.
Trying to print results in a crash.
Other features weren't tested. The same results should be expected from Streets & Trips, as the code base is identical, just the datasets that they run from are slightly different.