Mapstraction - Aug 2010 - Multiple geometry, selections and georss

Hello-

I have not used Mapstraction yet, and am new to geographic display
software. I just sank sank several frustating Firebug-hours into another open
source toolkit and am casting about for alternatives. Please tell me how to use
Mapstraction for a particular use case..

The use case is a map of places with lines to the nearest surrounding
places. I would like to just show all of the places. When you the lines
radiating from that place light up.

The data source is points and lines in one <item> from a georss feed.
Selecting a point for an item should change how the lines are displayed.
It would be really great if the lines for one item are invisible until
you select
the point.

Is this possible, and what tools would I use to make this happen?
Layers, features, whatnot? The data source can be changed. to supply
the data in separate items.

Thanks,

Lance Norskog
goksron at gmail.com