Finding a character in .txt file

[yang]

what I need to do is finding a particular from a .txt file, and then I need to save the strings that were found with the character into a output file. However, at the first step, Anyone can show me how to find a particular character from a txt.file? Thank you for your help.

[Michael Decker]

Allen,

Apparently you didn't understand how to use the code that I sent you last week.

What's the problem?

Michael