Unix to Dos filtering

[Aditya . Sanghi]

Dear CVS Gurus,

     Client developers on my site, checkout code on unix machines. They then use
the checked out code on Windows using Samba. How do i make sure that when they
check the files out on unix, it automatically put the Ctrl Ms on these DOS-type
files?
     If a file is checked in with Ctrl Ms on unix, are the Ctrl Ms retained on
another checkout or during commit? (All cvs commands are run on unix).

Thanks in advance,
aditya