Printing special characters in preprinted stationery reports in dotmatrix printer

Hi all,

I wrote a code in my program which prints directly to printer(DotMatrix).

every thing is printing fine,all the values are coming fine.but i want to print special characters like ( °, µ, ± , )

from text file to preprited stationery reports

eg:textio.write("");

thanks and regards

dhinu.v