Genetic algorithm with integer variables using MATLAB R2009b version.

Is there any body who can help me in performing genetic algorithm with integer variables in MATLAB R 2009 b version. Because i have only MATLAB R 2009b version which do not contain any option to handle integer variables in genetic algorithm in optimization tool box. Is there any body who can send me a M-file with the code to run genetic algorithm with integer variables with custom crossover and mutation operators.

Thanks