ComboBox (using Commas)

I'm using O2003, creating a custom form, using the combo box control.
I want to add multiple values but within those values I want to use
commas. For example

This is value number 1, and it has a comma
This is value number 2, and it has a comma

However, Outlook thinks the comma is a new entry and it lists the
items as follows:

This is value number 1
and it has a comma
This is value number 2
and it has a comma

It there a way to add entry using a comma as part of the entry?

Thank you.

Shawn