Help To Write An Action Hook With 3rd Party Plugin

Hi

My questions is this really, what will WPMU Support help with and what will they not.

For example is writing a hook for a 3rd party plugin out of the question if proper documentation is available?

I note you market offering help with anything Wordpress but I just want to understand what the parameters are?

I have an action hook I need to write but other than knowing where I need to hook etc I am not sure how to do it. Will support help with this kind of thing?

Best Wishes

Wayne