New Menu in lheader

This is kind of a sequel to one I had written earlier. But I decided to go with using just the default template and I am not including a header file. Instead I am putting the header info into the lheader.htm template page so it shows up on every page. But I have different levels of access. so....
What kind of code would I use to show menus based on group id.
I am not that good at code so can someone help me come up with maybe a PHP insert to put in the htm template that would be some kind of if statement? So that it can pick the best menu based on group id.
Does that sound doable?
I am pretty good with html and picking my way thru php, but have not a good knowledge base to do something like this with out help.
Kim <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=9031&image=1&table=forumtopics' class='bbc_emoticon' alt=':)' />