Comment Grunt Work (Score 1) 2
For the most part you will probably be given the work that the normal full-timers dont want to do, IE: unbox this, ship that, clean over here, re-organize this, or the occasional project no one else wants to deal with. This is usually to test both your willingness and abilities, and depending on how you perform they will give you more complicated stuff (they will probably try to pawn as much work off on you as they think you can handle without messing up and forcing them to re-do)
As far as experience goes, you will probably benefit the most from getting used to the business processes, even though they vary from place to place and depending on your level of involvement it may also help you get an understanding of what areas within IT do what jobs, as most computer science curriculum's will generaly train you as a "jack of all trades" (again this will vary alot from place to place)