urgent help

hi i?m a portuguese student, i doing a project to finish university, but i've a short time to do it, my project must done in june, and i?m not work well withJAVA.
I tell you what is my project, and if you help me, i will very gratefull to you.

MY PROJECT:
I have to do a "BUSINESS CASE TABLE", for my project i?ve create the "business
case table" in 2 parts the first part is the variable names and the 2 part is
the task names, this is ready but, i?ve a problem, the variables names are
input from the user and if the variable name is too long i want that the header
show multiple lines, i just do that, but is the next variable name is short the
next column have a smaller header than the 1 column.

My 2nd problem is in 2nd part, task names, i have create a table, in each cell
of the table appear a combobox, this combobox have 2 images, when i click in
the combobox is show me 2 images but when i choose one option the image
dissapear and in the cell only show the name of the image.

I want to know if anyone can help me???

I send you the complete code of my project.
thanks.