Mention that you're an invited speaker for our Computer Science colloquium series. They should be able to give you directions to the reserved parking places. Our rooms usually have an overhead projector for transparencies, and a blackboard. Just in case, however, it might be useful to bring a set of back-up transparencies. The best is probably to wear something you feel comfortable in.
Travel Expenses Our budget for colloquium talks unfortunately is rather limited.
We try to offer some support for travel expenses for speakers from academia. For speakers from industry, we hope that their company appreciates the honor of the affair, and will pick up the expenses of the speaker.