Try the Lightwave forums.
I use Lightwave and have modeled with it, but find animating unbearably difficult. I'm not the only one, andm ost game character models are animated in Chraracter Studio because it makes the process somewhat easier.
If someone does the job for you in Max, you won't be able to export the animations to Lightwave, because .max is a proprietry format only for Max. You could use .X format, but it has some limitations (like only one bone per vertex, which is not good for character animation).
What I do is get the Max modeler to do the exporting to the required format (eg, md7) and take a copy of the max files as well so that if more work needs to be done on it in future, I can send it to someone with Max.
Frustrating, isn't it? But really, try your luck over on the Lightwave forums.