You can use an
RF
modulator to do this, or if you have an old Analogue satelite system that
you
no longer use you can fed the PC output into the VCR or Decoder SCART and
it
will be fed out of the RF output.
Be aware that
640x480 is about the only resolution you will be able to use over RF,
800x600
if distributed as S-Video. You may need to increase the font size in
WIndows
to make it more legible.
And don't expect stereo audio either, unless you
fork out a few hundred quid for a Nicam encoder.
James
H