$20/hour right out of college is difficult, but doable. I did a bit less than that, right out of university, at a helpdesk (this was in the mid-90s). Wages haven't exactly gone up a lot since then, so you might need to settle on $15-$18/hour for a simple helpdesk-type job without experience.
By this, I mean a professional corporate helpdesk where you wear a suit, or at least professional clothing, carry a professional attitude, etc. - not a helpdesk job on a phone at your local dialup ISP.
Of course, after a couple of years in the industry, I'm earning several times that as a contractor - a good bit over six figures once it's all said and done.
IT is still rewarding - but you need to *KNOW* things. Knowing how to install Windows plus update drivers isn't knowing things anymore - anyone can do that. Knowing hardware is a nonissue too. Speaking of Windows, if you can have an intelligent discussion about FSMO roles, joining a domain (and creating one), DHCP and DORA requests, deployment (unattended, RIS, sysprep, RIPREP), and can talk about how to plan an enterprise IT scenario, you can get fairly good pay. It helps if you can do things few others really know how to do - get specialized and become very, very good at doing things. At work, advertise yourself - become the trainer for the department so anyone can see your talent, and then move on when the work gets simple or boring.
Buy a few simple PCs and use them to learn. Don't be cheap - you'll only shortchange yourself.
Go to a serious, accredited 4 year university that has a serious IT program, and take serious, hard classes, and get good grades. The people that take easy classes in university are stupid. The idea is to learn and to push yourself.
Get an MCSE (forget about MCPs - anyone can pass one test - get the entire thing), or get your full Cisco certification, or get *fully* certified in something. A+ is passe now - 10 years ago knowing all about shared interrupts was interesting; now it's obsolete.
In other words, get serious. Don't mess around. Spend your time wisely, and study *hard*. If you do, you will be rewarded.
(Whew!)