Capello's England Objective - Unrealistic?

So the FA have set Capello the objective of getting England to at least the semi-finals at one of the next two major tournaments. Bearing in mind that England have failed to reach the last four of a major tournament since Euro 96, are the FA setting Capello an unrealistic target?

Let’s take a look at the history of England’s manager:

Walter Winterbottom 1946-1962 England’s first manager, took them to 4 World Cups
Matches: 139 Win %: 56.11

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Alf Ramsey 1963-1974 Former England captain who went on to guide England to their finest hour in 1966.
Matches: 113 Win %: 61.06

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Joe Mercer 1974 Caretaker Manager took charge for only seven games, winning the British Championship and losing only once.
Matches: 7 Win %: 42.85

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Don Revie 1974-1977 Lost key players, quit controversially to coach the United Arab Emirates.
Matches: 29 Win %: 48.27

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Ron Greenwood 1977-1982 Former West Ham idol who led England to the 1982 World Cup finals - their first in 12 years.
Matches: 55 Win %: 59.99

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Bobby Robson 1982-1990 Led England to the World Cup semi-finals, in 1990, losing only on penalties to Germany.
Matches: 95 Win %: 49.47

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Graham Taylor 1990-1993 Failed to qualify for the 1994 World Cup finals.
Matches: 38 Win %: 47.36

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Terry Venables 1994-1996 Guided England to the semi-finals of Euro 96 before another penalty shoot-out failure against Germany.
Matches: 23 Win %: 47.82

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Glenn Hoddle 1996-1999 Was sacked following controversial comments about the disabled. His record however was pretty good.
Matches: 28 Win %: 60.71

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Howard Wilkinson 1999 and 2000 Technical director who had two one-game spells as caretaker after Hoddle and Keegan.
Matches: 2 Win %: -

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Kevin Keegan 1999-2000 Former England player - was tactically naive and had a poor record.
Matches: 18 Win %: 38.88

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Peter Taylor 2000 Gave David Beckham the captaincy for the first time in his only game as caretaker. Proved to be a great decision.
Matches: 1 Win %: -

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Sven-Goran Eriksson 2001-2006 First foreign coach who led England to the World Cup quarter-finals in 2002 and 2006. Had a very good record as England manager, however was not so good off the field.
Matches: 67 Win %: 59.70

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Steve McClaren 2006-2007 Poor appointment, led to England wasting the chance to reach Euro 2008.
Matches: 18 Win %: 50.00