how wall street will kick off the day. the dow opens at 12,760 after gaining 75 points yesterday. the s&p 500 added ten points. the nasdaq rose 28. taking a look at overseas trading this morning, in tokyo, the nikkei was up 45 points but in hong kong the hang seng dropped 44. after last week s giant commodities selloff, chinesed wall street s fears about global growth tuesday while paving the way for more american business. china not only posting an april trade surplus nearly four times better than expected, it agreed to open up its government contracts to more u.s. companies and let u.s. banks sell mutual funds there. microsoft s mega deal to buy skype for $8.5 billion helped drive trade. but not microsoft itself. shares fell on skepticism the price was too high. on the other hand, shares of ebay which owns a large stake in skype rose 2.5%. a surprise departure by the ceo