how to remove (^M ^G ) characters

[perl_haxor 123]

Hi All,

           I'm a beginner in perl and i try to read a file, but these files
contains characters like (^M ^G)......I wanted to know what are these
characters and how can remove them using perl?.....and also please let me if
there is any link form where i can find what these characters are and their
ascii values?......any sugges would be really helpful






Thanks