You may not be aware of it, but this forum has archives going back quite a while. In late 2005, there were several discussions – and good advice. Look at the “Search for:” above here, and search for career or career advice, and go back a few screens. The more recent ones deal with SAP, but there are a whole bunch that address your question precisely.
One key thing (pointed out in some of those posts as well), is that you need to give serious consideration as to how high in the IT hierarchy you intend to go. If you want to go any further than first level manager, you’re going to need a 4 year (or better) degree.