Help with search and grabber

[jimw1001]

I'm new to robot building and have at this point completed some navigational experiments with the Mindspring NXT 2.0. I am now in the process of completing the programming to have my robot navigate around barriers (done), and then use a color sensor and grabber to search for and retrieve a colored ball. I have some books on NXT projects but haven't seen an example of how to complete this search and retrieve function. Are there any members who will share their programming for such a task to give me a headstart?