Legally, that would be enough, as long as the circumstances make it clear that the customer has in fact seen and agreed to the terms--e.g. some "click through" system, whereby the customer, by clicking (and probably getting some pop-up, to call it to his attention) acknowledges his agreement to the terms. That said, you could still not disclaim all responsibilty: if you sell, for example, a system that does not meet the specs the customer was buying, sell something that you know or had reason to know was defective, etc. you could still be liable.