Kendra,
He way you want to handle this is with nested repeat controls.
the the outer repeat would just be the user name. Then inside that repeat make additional repeats as necessary using that username from the collection name variable to do whatever lookups you need to get that data.
i have a simple example of this on XPagescheatsheet.com. There's a live demo and a downloadable db. I'm sure this was featured in a notesin9 show or two but I don't remember which one it might be.
give that a try
dave