Alternative to Pin Light/Lighten

I use a program similar to PSP and PS, but not quite (Corel Photo-Paint 12), and I don't have Lighten or Pin Light on my program. Are there any alternatives/equivalents to this, or any way to imitate this? Besides Screen :)

I have the basic Blending modes - Add, Subtract, Difference, Multiply, Exclusion, Screen, Soft Light and Overlay etc, but not those two...:(

Thanks in advance!