Newbie question

[Mike]

Hi,

I'm trying to build a simple Proportional Symbol map using teh
Thematic Mapping API. I thought I'd figured out a simple way to do
this, get my dataset in Excel
1) build dataset
company size address city state zip latitude longitude
A1 5 6500 e belleview av, englewood, co 80111
39.60591117, -104.8995746
A2 10 1290 Broadway,denver,co,80203
39.7367122,-104.9873034
...

2) Then I went to the TM Engine tab and selected some parameters
(CO2, ...) and hit download.

3) This gave me a kmz file which I copy/pasted into a zip file (copy
then rename copy to .zip). I then extracted the KML file from this and
again did a copy file/paste to build doc.xml

4) I then went into this xml file and changed the data between the
Placemark tags as follows:
<Placemark>
<name>A1</name>
<visibility>1</visibility>
<Snippet>5</Snippet>
<styleUrl>#sharedStyle</styleUrl>
<Style>
<IconStyle>
<scale>0.05</scale>
<color>E598FEFF</color>
</IconStyle>
</Style>
<LookAt>
<latitude>39.60591117</latitude><longitude>-104.8995746</
longitude>
<altitude>0</altitude>
<range>32000</range>
<altitudeMode>clampToGround</altitudeMode>
</LookAt>
<Point>
<coordinates>-104.8995746,39.60591117,0</coordinates>
</Point>
</Placemark>

where
my file xml file tag
---------- -----------------
company name
snippet size
lat/long same.

You will note I also changed the <range> value to allow my to focus in
on just Denver sites. All other tags were left as is.

5) I then copy file/paste doc.xml into doc.kml
6) I then added/updated this file in doc.zip
7) I then copy file/paste to doc.kmz

8) when I double click on this kmz file, it opens Google Earth and
rotates to show a big dot over Denver, but doesn't seem to do what I
want, have a number of proportional symbols over different addresses
in Denver.

Thank you very much.
Mike