[ESS] Replace control characters in log

[Will]

Dear ESS list,

it might sound strange but I am using GNU Emacs/ESS with SAS in a MS 
Windows XP environment in Batch mode. I have the problem that in the log 
window strange control characters appear ("^M") which mess up the layout.

How do I tell Emacs to replace those control characters with the correct 
formatting?

Thanks in advance,

Will