Simple lisp question - printing out file name

[exits funnel]

Hello,

I have added to several .el files something like this:

(message "In prj.el")

to help me straighten out configuration issues.  I'd
like to make it slightly more sophisicated by (a)
replacing the hard coded string with some lisp to read
the fully qualified file name and (b) to prepend a
timestamp.  I'm sure this is trivial lisp, but
apparently it's not quite trivial enough for me :)  It
seems that buffer-file-name and current-time-string
should be of interest to me but I can't get them to
work inside my message call.  Can anyone help me out
here?  Thanks in advance.

-exits

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com