how do i out series of bits thru d serial port using c++ and visual c++. i want to use it to control my hardware i built

Visit the following article at codeproject site or just search with the keyword "port", "serial port". These will get you goin:

http://www.codeproject.com/system/simpleserialcomm.asp
http://www.codeproject.com/system/AsefPortAccess.asp
http://www.codeproject.com/system/serial_com.asp
hthttp://www.codeproject.com/csharp/serialcommunication.asp
http://www.codeproject.com/system/serial.asp
http://www.codeproject.com/system/SerialPortComm.asp

Again check this.

Hope this helps.

The almight RS232 issue, I'm having problems with a microcontroller to GPRS modem interface. Anyway I have a simple program (for windows) that writes to the serial port. I'll send it to you later if you want, you can tweak it to suit.

I never quite got the Rx input working as I wanted, I was trying to do some sort of multi-thread app (as you can't throw interrupts "per say" on a windows machine) to store the input in a buffer and continue writing to Tx, however the Tx output works fine. As it stands now, it writes commands entered from keyboard to the com port.