export ascii and insert a text file

[Enrique Arredondo]

How can I make this happend :

I'm generating a XML document to a ascii file , but Under the tag 
"ImageFile" I need to do a quick system command that will convert a JPG 
file to a text file and stick in inside this tag and then close the tag.

So the Idea is to do this :

Then : "<ImageFile>"{system noredraw "base64 chevy350.jpg > 
chev350.64"{"</ImageFile>" ;gosub writeit

How should I import the chev350.64 to this line ? using a GETENV or import 
ascii line by line ?

Thanks