gistfile1.txt

Given a preexisting lat/lng 
 
lat                    | 41.9219
lng                    | -87.6562
 
and a table that I added a geometry column via the following sql
  SELECT AddGeometryColumn('bars','the_geom','9102671','MULTILINESTRING',2);

  (the srid is illinois, east, 9102671)
  (i think lat-lngs will be stored as multistring)
 
how do i convert the lat/lng into a point and have it stored as the_geom?
 
do i do this? 
  update bars set the_geom = setsrid(makepoint(-87.6562, 41.9219), 4269)
 
or do i change the srid to illinois east?