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Use HT12E (Encoder) and HT12D (Decoder) ICs which are dedicated Remote ICs. You can find more information and schematics based on these ICs at www.rentron.com
The output of these ICs can be easily connected to the "Status Inputs" of Printer Port.
One more thing. VB can't access Parallel Port Directly. So you need to get an Activex Control for that (like the MSCOMM control for serial port). I had found one on the net but I don't remember the URL right now. Try searching it in google.com .