wireless data transmissin(Infarad) using RS232 port(computer

Anyone know how to transmit the data using RS232 port with Infarad? No cable is used.
For Example:
i already built a dot-matrix display project which the data transfer from RS232 port to dot-matrix display device with using cable connect between them.
So now, no cable is used to transfer the data. Only transfer data wireless(any wireles type but prefer IR).
Anyone can teach me how 2 do it?

well there are lot of converter available in the market.which are able to transmit data wirelessly from one point to another.

Can u introduce me some conveter? Or tell me which type of converter suitable to use.