Parse Unix date !

I'm required to grab some value from table in sybase based on the
timestamp of the file generated in Unix ( solaris ). Time format in
Sybase is say ( Mar 22 2008 10:41:59:662 AM).

I'm able to format the time stamp of the file in this format ( Mar 22
2008 10:41:59 AM) but not the *milliseconds*.

1) Would 'ctime' or 'atime' or 'mtime' return milliseconds as well?

2) If it does how can we Parse the milliseconds?

If I remember right I do something like
UnixDate(ParseDate($fileTimeStamp), "% % %") etc..

I'm not sure what  %??   to be used inorder to get *milliseconds*.