If the company has recently moved from an office park to a basement, chances are things are not on the way up. You don't want your first job to last for only three months. Use your judgment. Once again, a big salary is nothing if you're miserable. Ask questions about the vertical mobility within the company.
Promotions are important.
Be blunt about finding out how often you're up for a raise. Get them to promise it so you can hold them to it later on. Again, it isn't necessarily all about the money. A concierge service that does your grocery shopping is a nice luxury to have, as is tuition reimbursement. It's not just about the money.