J.T. Wang, the chairman of Acer, looks like such a nice guy. But appearances are deceiving. The Taiwanese businessman is determined to keep his PC maker from becoming an also-ran. His company just announced plans to buy Gateway, the once-famed PC seller bruised by competition with Dell and Hewlett-Packard, for $710 million. The deal cuts at Chinese archrival Lenovo twice — first, by vaulting Acer past Lenovo into third place for PC market share. Second, by disrupting Lenovo's plans to buy Packard Bell, a fading PC brand that's still strong in Europe. Gateway, from a past acquisition, got rights of first refusal on any deal to buy Packard Bell — and Acer now plans to exercise those rights. Let's see — for a mere $710 million, Wang gets bragging rights, a bigger share of the vital U.S. market, and a way to bloody a rival's nose. Sounds cheap to me.