[dba-VB] C# replace a special character

I have a file which contains a sprinkling of a special character - decimal 26, hex 1A (the SUB 
character).  This special character in the CSV file output to Accuzip causes Accuzip to hiccup.  In 
order to get on with my life I need to pre-process the files to get rid of this special character. 
Because of the size of these files (hundreds of mbytes) I need to do a readline / replace / 
writeline kind of thing.  I think I need to use the stringbuilder.replace but I do not know how to 
specify replacing this hex 1A with something else.  The something else would ideally be nothing 
(empty string) but can be any valid alpha character (A, B etc).

Can anyone help me with this replace part of the problem.  C# syntax please.

-- 
John W. Colby
www.ColbyConsulting.com