> However, this does not work. I get an error that reads: "Run-time
> error '424': Object required."

Don't you want those "MyComboBox1" references to be "cbox" (the object
parameter passed to the subroutine)?

> Also, rather than calling "SetColor(MyComboBox1)", is there a way
> to reference the "current" combo box using a variable similar to
> "this" in Java?

You may be able to use some variation of "Application.Caller"...