Loop or north side location for up to 50 with private room

I'm looking for suggestions for a restaurant (I'm thinking in the Loop or on the north side,but I'm open to other suggestions) for 25-50 people, with a private room that could be used to show a presentation. The budget is not big, $500, so it would have to be something casual like pizza. Any ideas?

Here is a place that fits your reqs. However, I have absolutely no idea of what the food is like. So I make no guarantees, but it is some place to begin.

http://chicagos-pizza.com/photo/chicagos-eventmenu.pdf

That is a good start. Thanks very much.

I don't know the exactly how many it can hold or about the A/V equipment, but for the budget I really think Portillos could be an outstanding option food wise. I have yet to meet someone who doesn't at least think Portillos is good (I know at work everyone freaks out and completely over-orders when we order for lunch on a weekend) and many love it, including myself.

Worth consideration IMHO, assuming the logistics and size work out.

By coincidence, Portillo's just occurred to me too. Thanks.

Thought I'd follow up with some information that might be useful to others. First, the location that ended up working for the event I'm helping to plan is Connie's Pizza on Archer Avenue in Bridgeport. We picked one of the three available pizza menus for groups that will feed our group of (now) 30 with thin-crust veggie, thin-crust pepperoni, and deep-dish sausage for less than $500 and leave some money for pitchers of beer. The event is in July; I'll try to remember to post back on how it meets our expectations.

The other contender, Portillo's on Ontario, said that they were booked up with private parties throughout Taste of Chicago (July 10-14). We couldn't change our event to another week, unfortunately.