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[Sindi Keesan <keesan AT iamjlamb.com>]

I looked at your scripts (or someone's scripts) for send and receive and 
they appear to be testing ping and if it works, to proceed with actually 
sending files using something called 'nc' to open a pipe to IP:port.

The relevant lines, other than those giving instructions to type the 
hostname and filename and how to quit, are:

Receive - 
nc -l -p 33|tar -xv

Send -
tar -cf -$filename|nc $hostname 33

Could I substitute the number of the receiving computer (ends in .2) for 
$hostname and the name of the file for $filename and try sending that way?

Is 33 the port? 

-l - listen mode   -- what does this mean?
-p - PORT  (33)

You appear to be compressing the file at the send end, and uncompressing 
it at the receive end after establishing a connection between the two.  
tar  -c compress -x uncompress  -v verbose (-f?)

IP - $hostname