How to convert floating point number to hexadecimal representation

I am new VIsual Basic and need to learn how to convert a floating point number, declared as a single, to its internal hexadecimal representation (IEEE 754 32-bit representation). The hexadecimal number will then be transmitted across RS-232 to another controller which interprets the 32-bit hexadecimal data as single precision floating point.

As an example

Global float_input as Single

float_input = 2.5

desired hexadecimal output = &H 40200000

[481 byte] By [apunater] at [2007-12-24]