You might want to check perlfaq8 and read "How to measure time under one second".
If you are lucky you can use that bit of information to get a more detailed timestamp.

However, I would either try to get the sysadmin to install Time::HiRes or use perl-5.8.0RC2 (in a bit 5.8 ;-)), which has Time::HiRes as a core module.

Otherwise I would suggest to read perlfaq5 "How do I make a temporary file name?".

Kay