Looked around in the forum but didn't see anyone with my particular problem. I think I did things backwards - I saw the maintenence guy and then I shoved the balloons down the tube. I went to the room to try to bolt the door, but Manny just stands there and says 'with what?' Does that mean I have to start over? Hope not.

Thanks!

Never mind I figured it out :)

it seems that u have to load a previous gamesave when u have not entered the server room.
after u have messed the server up using the balloons.Go to the server room,pick up the fire extinguisher from the wall.Do remember to set the bolt on the door.so that the door wouldn't close after the maintenace guy left