>The way I have it is for the to type in there but that could very easily changed if it bacame necessary to achieve the goal.

If you mean here, that your users can live with read-only grid.column then it can be achieved by using custom form method as grid.column.controlsource. This method will return properly formatted string, e.g.

cString=chrtran(alltrim(str(table1.dummy,10,2)),".",",")
cRetvalue=""
nCounter=0
FOR n=len(cString) to 1 step -1
 nCounter=nCounter+1
 IF mod(nCounter,4)=3 and nCounter>3
  cRetvalue="."+cRetvalue
 ENDIF
 cRetvalue=substr(cString,n,1)+cRetvalue
ENDFOR
RETURN cRetvalue