Guitar Setup

O man...

I just bought an Ibanez RG350dx from American Musical supply, got it the otherday in the mail... Thing looks amazing, but im having some problems. I have never owned a guitar before with a floating tremelo like the Edge III system... I tuned it (according to my cheap automatic tuner) and it sounds to be in tune but the low E string seems to buzz when I play it open or the play it on lower frets.

I called my local guitar store and they said that the action may be to low and they can do a complete setup of my guitar for $49.99 but it would take a few days... I dont honestly want to pay $49 as I could barely afford the guitar as it is, I also don't want to wait a few days lol...

I guess my question is, how do you really tune this sytem? The instruction manual is absolutley no help... i feel stupid :(

I would get it set up. I brought a cheap squier and it was alright i suppose.
I took it for a setup and now it sounds great and rarely goes out of tune.

My next guitar will be a RG1570MRB. I will buy it new and get it setup befor i even play it.