There are two ways to do this,
1> Write you own programe to read data from serial port using VC or C++.
2> Get SIMKEY and install it and it will read the data from serial port and will display exact where your cursor will be. In any form or text pad.
You can download a demo of this programe from the following link,
http://members.aol.com/idinnov/
<b>
SimKey Triple Pack "The Keyboard Simulator" </b>
A serial wedge program that allows you to input serial data directly into OS/2, DOS, or Windows application without any programming. Ideal for interfacing with Bar Code readers, Portable Terminals, Magnetic Card readers, Electronic Scales, and Laboratory instruments. Provides predefined filters: Convert to Lower-case, Convert to Upper-case, Numeric Only, Alpha-Numeric Only. Windows and OS/2 programs allow you to log received data to a file in the background. DOS program supports up to 10 User-Defined COM ports in addition to support for COM1 - COM4. Includes separate programs for OS/2, DOS, and Windows in one package.
Let me know if still any further info required. thanks