This covers everything Ewans link mentions but in more detail. I would recommend reading it twice:
http://forums.delphiforums.com/n/mb/message.asp?webtag=battlebot_tech&msg=10046.1&maxT =3http://forums.delphiforums.com/n/mb/...tech&msg=10046. 1&maxT=3
Its the Battlebots forums Ultimate Guide to Sponsorship. The other Ultimate Guides on there are also worth reading, I found them really useful.