I wish you luck. Perl 5.004 lacks many of the syntax stuff that is considered common nowadays. If you are not experienced with Perl, you have little chance of fixing it, but here are some stumbling blocks that I found:

• No qr// syntax - use interpolated strings instead
• No INIT blocks - copy and paste the code into your main program instead

Your best bet is to either install a newer version of Perl or to find a better hosting provider that has a newer version of Perl.