.net getting you $115k is bullshit. the money is overseas unless you're really good, but thats true with most fields, not just IT. the exceptions would be perhaps mining (its big in au, but not really for IT), and in IT perhaps in sales.
theres lots of shit jobs in IT, if you have a degree you'll be able to avoid them mostly.
pick what you want to do, admin or development. take the first relevant job you can get (so if you want to be an admin dont take development jobs, if you want to be a developer dont take admin jobs) otherwise you get pigeonholed. if you have a degree dont do support, unless its while you get your degree, even then you might end up staying in support cause its easier than starting afresh. out of uni you should take the first relevant job you get, expect around $35k - $40k, and use it to build up your experience. you're not going to walk out of uni into a dream job, just use each job as a stepping stone, and make sure it gets you closer to where you want to be (i.e. your ideal admin or development position).
dont choose a career on what pays the most and/or whats hot. seriously. shit changes too fast, and its unrealistic to expect your career to focus on one given technology. .net/j2ee may be the bees knees now, and it wont be going away anywhere soon, but in 5 years the next whizbang language will be out and everyone will be switching to that.
recruiters are the scum of the fucking earth not, as the apc mag article put it "the backbone of IT employment". if i had to think of one reason why IT was in the woeful state it is today, recruiters would be top of the list.
anyway, theres plenty of work for good people. just make sure you're one of the good people, and get some experience.