Poser lights are exactly the same in Poser Pro and Poser 7 and (I believe) Poser 6. I can create a lightset in Poser Pro and load it in Poser 7 (I just did it, to make sure).

What differences are you referring to?

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)