Simple - one of the developers does it.
The nice thing about cutting IT is that you save lots of money because all the time that your developers spend configuring new printers for secretaries, reinstalling windows on the bosses virus laden laptop doesn't count - thats all free
My new rule - if there are any non-tech staff on site and you don't have an IT person I'm not working there as a developer - especially if you are the only 'computer person'