i'm a indian holding indian passport with a chineese business visa.if i want a visa in hongkong ?

hello friend
i'm a indian and holding a indian passport .i have a chineese business visa.in april i'm planning to come china via hong kong.i wish to stay 5 days in hong kong as a tourist.i need to know i want a hong kong visa?i get the visa on arrival?please give me a answer and thanks in advance

binu.india