insert blank line

Hi,

I have a shell script
with (1000) contiguous textlines like

    ampl Models/aircrftb.mod  >   Output/aircrftb.out
    ampl Models/airport.mod   >   Output/airport.out
    ampl Models/aljazzaf.mod  >   Output/aljazzaf.out
    ampl Models/allinitc.mod  >   Output/allinitc.out
    ampl Models/allinit.mod   >   Output/allinit.out
    ampl Models/allinitu.mod  >   Output/allinitu.out
    ampl Models/alsotame.mod  >   Output/alsotame.out

before each line I want to insert a new line to print
the model name into a TeX file, like

printf '%s' "  aircrftb & " >> TABLE.TEX
and
printf '%s' "  airport & " >> TABLE.TEX
etc.

How can I do this in sed or awk?
Any help is greatly appreciated.

Dieter

kraft@[EMAIL PROTECTED]