Support is the wrong place to start
If you start at entry level support you're a receptionist. The reason the bar to entry is so low is you're not expected to know any IT and you won't have any chance to learn any either.
Agreed with much of the above - if the reason you want to get into IT is for the pay etc. then you've picked the wrong career. That ship has sailed.. I earn only 60% of what I did 5 years ago and my job is harder. And that's normal. The days of 20%+ annual pay rises are long gone.
OTOH if you're doing it because you like working with computers then it may be worth doing, but start at entry level programming not support... and you're going to have to get whatever qualifications are 'trendy' at the moment to get your foot in the door* (haven't heard of any of the ones mentioned above.. when I did it it was HND at a minimum), then be treated like shit for at least 5 years before you have the experience to work your way up the ladder. That much hasn't changed.
* The qualifications won't actually tell you anything - if you've got any interest in computing at all you already know everything (and more, probably) they're likely to teach - but without them your CV will be straight in the bin.
** Thinking about it, we have no formal qualification - it's all experience, and we don't read CVs until late in the recruitment process, if at all.. but as a small company we can get away with that. Larger companies often use recruitment companies - who basically strip your CV for keywords then match with requirements and send everyone to interview who appears to match. Hence having a CV with lots of relevant qualifications/buzzwords on it is essential.