any ideas on a PERL script to watch a log file that changes name via datestamp?

I have a log file I must watch for some specific text.  It is running on an AIX system.  The log file changes names with every application restart, and that can be multiple times per day....  How can I script this to use a "wildcard" for a remainder of the file  (noapp.log.timestamp)

Any idea would be very helpful.  BTW, I stink at scripting....

Thanks a bunch!!!!