Graphic Design/Fundraising Help Needed

I am a high school teacher. I teach Marketing and Finance classes. Since they do not allow drinks and food to be sold, I no longer have a fund raiser. I have a club called DECA. It is a Marketing club that I take to competitions. Unfortuantely, these competitions take lots of money to attend. Our state competition alone costs me about $1500-2000 to attend. I am wanting to sell some tshirts for the upcoming basketball season to raise some money. The problem is I have no graphical abilities. If anybody out that could help me design a tshirt, I would be very thankful. Don't know where to begin. Not only do I need ideas for what the shirt should look like, I need somebody that could then put it together on the computer for me so that I have something to take to the screen printers. I know that there are some really great graphic artists out there so I am just hoping somebody can help me out. I thank you and my Marketing students thank you. I am also open to any other ideas for raising money for our club.