I would recommend making sure your team has a strategy session scheduled very close to kickoff. The day of, or after. This way you have an idea of what you are constructing a robot for. You wouldn't want to make yourself a nice chunky arm if it would prove useless.
Next, when it arrives, make sure you have a very clear understanding of your kit of parts, and what should be in it. FIRST has impotant rules about what can be used for what. A lot of that information can hopefully be found in the US First
website as well as in the Technical section of the Chief Delphi Forums. Most likely will be there after kickoff.
Get working! To take your original post literally, with you being about to build a robot, I would hope you have a good deal of help. Programming, Electrics, and Mechanics can't all be done by one lonely person in 6 weeks. Be ready to communicate with the other people to make sure your plans are put together and well-organized. For example, in the 2003 season the 461 electric stuff had to be reinstalled a bit dangerously close to the send date because of the location of a gear or two that may have been a problem during the rounds.
I wish you luck! There are many experienced people on CD who can help you start organizing and give you tips on your robot.