Cisco (CSCO) was one of the greatest investments of the 1990s, surging from a low of eight cents (adjusted for many splits) at the start of 1990 to a high of 82 in 2000. If you’d been lucky enough and courageous enough to enjoy the whole ride, you could have turned $10,000 into more than $10 million. Of course, at the start of 1990, few investors knew about Cisco. But even if you’d waited until the start of 1995, when Cisco was very well known, you still could have done very well, turning $10,000 into more than $440,000 …...