[BenDSterling]

At this point, getting sponsors will be hard. Look at the other posts in this thread, they all give great information. The easiest sponsors to get are small local businesses. Find a local t-shirt printing place to print your t-shirts for you, a local machine shop to let you use thier tools, etc. Sponsors are much more likely to give you stuff rather than money. Tell potential sponsors EXACTLY what you need the money for. Tell them the urgency of how you need the money. You are much more likely to get money by saying we need $X to register for this season so that we can comepete and build a robot than if you just said we need $X.
Also, do not do this over the phone. Either send them a letter for go in person. Schedule a meeting over email and then go and talk with them in person.
Good luck!!