[Koha] Search portal for multiple libraries

Hi folks, A group of libraries using Koha in Kenya are intending to set-up a portal where one can search multiple OPACs simultaneously. How can this be done? I need some advice on how to implement this. I will be very grateful if someone here has ideas or has tried to do it before and succeeded. Thanks. "Ignorance doesn't kill you, but it makes you sweat a lot". ~ Haitian Proverb BENSON MUGAMBI Technical Services Librarian Gretsa University - THIKA. bmugambi@gretsauniversity.ac.ke http://library.gretsauniversity.ac.ke