IF you can't find some good reading on the                  newsstand this week, you're just not looking hard   We can't imagine there's one New                 Yorker who won't be attracted by the cover lines                 "Envy" and "Stress," (the two perennial conditions                 that most of us suffer) in New York magazine and                 Newsweek, respectively.                  As we head into yet another summer that will                 inevitably be filled with stories of excesses in the                 Hamptons, it is hard not to feel envy. New York                 magazine points out that more than ever,                 Manhattan has become a home for the                 have-a-lots and the have-nots, and never has the                 gulf between the two been as wide. The problem                 with the four-story package is the repetition. The                 only other feature in the magazine, on rock band                 Pavement, is unreadable if you are not already a                 fan.                  Newsweek's stress package is more compelling.                 It takes a look at the causes of stress, our bodies'                 reactions, and innovative ways to reduce stress.                 Newsweek's been bulking up its coverage of Wall                 Street and business and the results are good. This                 week's issue features an essay on why full-service                 brokers will not be killed off by the Internet, plus                 an excellent feature on Silicon Valley moguls, and                 an exclusive interview with Microsoft's Nathan                 Myhrvold, currently on a one-year sabbatical. On                 the international front, Newsweek weighs in with                 its analysis on how the deal to make peace in                 Kosovo was achieved.                  Time, on the other hand, publishes the fifth of its                 special "People of the Century...