Help with ComboBox. Very Urgent please

I am  trying to write an app,ication using topcomponent. In the process, 
I tried to call a javax. swing form using topcomponent implementation. 
The form loads quite well but I placed some coponents on the form which 
are Jcombobox, Jtextfield and Jframe. But I want to load these Jcombobx 
using a class that I wrote but this is given me a problem. Can anybody 
help me out in solving this problem as it is an urgent work please.

Ogunleye Olalekan Samuel
Room 300 CVC Laboratory
Department of Computer Science
University of Cape Town
South Africa
+27(0)216502670 ------- Work
+27(0)792111220 ------- Mobile
+27(0)216899465 ------- Fax

Website: http://people.cs.uct.ac.za/~olaoye/