You might have to be a hair more specific. Is it a double or triple chairing? Doubles are extremely straight forward, take a little know how though. And where is it rubbing? When in the small ring up front where is the gear in the back when it makes noise? Same question for the big ring.
To start off tuning a front derailer I go low limit, high limit, then tension. From there try as many up shift/down shift combinations as you can, you'll probably need to tweak the limits and tension again to make it shift smoothly and minimize noise.
Triples can be a bit more problematic, and often won't be able to use every gear combination without chatter, at least not without a lot of experience and patience. The overall method is the same though.
Lastly, are you absolutely sure the noise is coming from your front derailed? You should be able to see the chain making contact if so. Just trying to narrow it down.
Either way, the lbs should have been able to get the high and low limits correct... Or if they couldn't they should've given you some kind of explanation for the problem. I've had some cheap set ups come in that you had to choose between proper shifting, but chatter in several gears, or no chatter but very temperamental shifting...