Before making a really big purchase, people often visit the bank to either withdraw cash or transfer money into a checking account.  Now, Microsoft seems to visiting the bank in a really big way, which has caused certain onlookers to speculate that it's preparing to make a few acquisitions. Romy Varghese reported earlier today, "Microsoft Corp. is selling bonds for the first time Monday, and investors looking for quality debt are lining up for a deal that will test the thawing ...