Original message:

I am pretty sure some of the GIS gurus out there can tackle this little one.
I have point data projected into a state plane coordinate system and need
the lat-long (unprojected data). Are there any straightforward ways to get
the data out of GIS or do I go to the survey book?
Thanks for all of the responses.  I should of been a little more specific in
my questioning.  I was hoping for a command to give the lat-long of a large
set of data points in a state plane coordinate system without having to
project (unproject) them to lat-long.  I guess I should expect things not to
be a click of the button.
*       The majority of the responses mentioned projecting the data to
lat-long and getting the x-y coordinates while in decimal degrees.
*        There are some scripts available on the ESRI website to create a
tool that yields the lat-long of projected data points within the view.
Located at http://gis.esri.com/arcscripts/details.cfm?CFGRIDKEY=355767542.
*       Last and not least there is a program available from the Army at
http://crunch.tec.army.mil/software/corpscon/corpscon.html that can convert
data sets with various projections and vertical datum to other projections
and datum.

Thanks again,

James M. Brescol
Tetra Tech MPS
Project Engineer
6810 S. Cedar Street, Suite 12
Lansing, MI 48911
Phone: 517.699.5710
Fax:  517.694.6295