Thanks to those ("Steve Piepgras" <steve.piepgras@dnr.state.mn.us>;  Davis
Bob <bobdav@melbourne.vic.gov.au>;Brian Mitchell
<bmitchel@nature.berkeley.edu>; who responded quickly -- and those who will
respond after this summary goes out -- with the answer to the first item in
my original question (see below).

The answer that seems to work for me is:

 To launch Arcview from Accces create a macro that includes the "RunApp"
command.  Type in the path to launch Arcview (i.e., c:
\esri\av_gis30\arcview\bin32\arcview.exe).  You can even get it open a
specific proejct by including a space and the project path (i.e. c:
\esri\av_gis30\arcview\bin32\arcview.exe d:\project\project.apr)

Still looking for answer to second item.

Original question:
This may be more complicated than the listerserve subscribers want to
tackle. But nothing ventured.....

I have a number of data files representing various geographic areas (e.g.,
block groups, census tracts, municipalities, zip codes, etc.) each with an
attribute 'Size'  with values ranging from 0 to several thousands. I'm
developing an Access Form to enter values in a table named "Criteria" which
identify a user-specified location within the State (e.g., street address,
block group, census tract, municipality, school district, etc.) and a
geographic level of interest for analysis (e.g., "neighborhood", census
tract level, municipality, school district). Upon pressing the "Analyze"
button, I want to lauch ArcView which will take certain values from the
"Criteria" table and perform a spatial analysis that will return an area
comprised of the minimum number of contiguous geographic units whose total
of the 'Size' value is greater than some threshhold.

I have the Access Form well along. So I have 2 questions at this point:

1. How do I lauch ArcView from within Access?

2. Does anyone have an Avenue script that will take a specified location
(point or polygon centroid) and using increasingly larger circles centered
on that point select the smallest area meeting the attribute value
threshhold.

I am confined to MS-Access and have ArcView 3.2, Spatial Analyst, Network
Analyst, Dynamap 2000, running on NT 4.0.

====================================================

Think Spatially ... Decide Visually ... Present Understandably ... Act
Wisely ... Be Satisfied!

Ric Skinner
Research Scientist/GIS Coordinator
NJ Dept. of Health & Senior Services
Cancer Epidemiology Services
P.O. Box 369
Trenton, NJ 08625-0369
Phone:  work:   609-588-3500        Fax:  609-588-3638
                home: 610-966-4047        email: rskinner@doh.state.nj.us
                cell:      610-349-6868
wskinner@fast.net