You might need to go see Computer Support (aka SSG) if, for instance, you'd like to get a Windows laptop hooked into the wireless network.
SSG provides walk-in assistance in room 307. In addition, you can send requests or problem reports by emailing email@example.com and can ask questions over the phone.
The office is usually staffed during normal business hours (9:00am to 5:00pm). In general, if the light is on, step into our offices - someone will likely be able to assist you.