Radio Tuning CGI Questions

Im writing a webpage that allows me to query the settings
of my Ham radio and to tune it, well .. almost tune it.

I'm having trouble getting the frequency into my perl script.

The script works from command line, whereas it takes the STDIN
from me and makes its connection to the receiver. Sooooo now
I've got a cgi script setup where I can type the frequency into
a box, then hit submit. At that point the perl script should
be reading the input. But .. I obviously have something
wrong.

I would appreciate if someone could let me know what I'm doing wrong
in getting the input into the script from the browser.

Also, while I'm going on about this and as I've written the scripts
to do this kind of control of my receiver I've noticed that it
requires a refresh of the webpage. What could I do that
would allow the same type of cgi/perl interface to my Ham receiver,
yet not refresh the webpage/browser "interface"? OR what could i
do to keep the base perl scripts in use but not require a refresh.

TIA
Dogdog