Converting End of Line markers

A co-worker sent a set of development files to me containing source code =

and scripts. Unfortunately, he routed it through his Windows desktop =
and=20
all of the text files have the standard Dos end-of-line markers. Bash=20
won't interpret them correctly. Is there a simple way to convert =
between=20
Dos EOL and UNIX/Linux EOL?

Thanks,

Brian