John,

I've been unable to see towers displayed on the map pages as shown in
the manual.

Hmm. Are obstacles activated in the "Map Categories Drawn..." menu? Are you looking at the US or
outside?

I am unable to see taxiways. I've not found a description of
this anywhere. I assume that is what the Taxiways file is and it is only
for the larger airports.

Yes, only the largest. Look at their website at
http://www.lowrance.com/Aviation/tax...surveystat.gif for a directory. Try scrolling and zooming in
on JFK, you'll see something.

I tried copying the files from the OEM SD to a new 1 GB SD from CompUSA.
The files appear in the 'Browse Files' menu just as they do on the OEM
SD. However , none of the data is available.

Yep, that's called copy protection. The files only work on that one SD card they have been activated
with. It still makes sense to back them up to the PC in case you delete them accidentally.

The 2000c was purchased 8/15.

Check the version of your unit software against the updates available at Lowrance.com.

The contents of the OEM SD copy
06/28/2006 02:09 AM 314,085,653 Terrain_Americas.at5

That's the terrain data (duh) for the Americas. There's one available for Europe, too.

06/28/2006 02:09 AM 51,092,233 International Map.lcm

That's the background map (major roads, lakes, rivers, big cities et cetera) for outside the US.

06/28/2006 02:09 AM 20,555,242 JepAmr0706.at5

Jeppesen data for the Americas. This one you can update via download and "activation".

06/28/2006 02:09 AM 4,382,606 Taxiways_v1_0.at5

Taxiway maps. There should be a new one available every now and then for free download, with updated
maps and new airports.

--
Thomas Borchert (EDDH)