connecting Virtual DJ to CDJ350 and CDM350 ?

Hi guys

Im trying to connect my mac book pro to my cdjs using virtual DJ. so I can use them as controllers for VDJ

I have downloaded and updated the Firmwear to latest version , 1.6 and need some help with the cabling

I would like to use my internal sound card, is that possible ?

mac book pro is version 10.5.8 so should be ok

so......

do I need to connect both CDJs via USB to my mac ?

can I use RCA cables ?

I've also downloaded the CDJ_Aggregator , this is necessary for the Virtual DJ to talk to the hardware , my CDJs , right ?

can anyone help me out

many thanks

roisin