Programming in weka

Hi everyone
I have some question about programming and the cooperation of weka 's section to each other(for example select attributes with classifire ).
If I want to classifire the attribiute in attribute selection how should I do?

How should I write a program in weka and add it to classifire or select attribiute ?
In my research I want to MIX genetic algorithm and aco for feature selection and then use svm classifire?
Is there anybody help me?
thanks a lot