I was active in the wearable hardware community several years ago, and all the hardware I had collected made the blog rounds when I put it up for sale. I realized that hardware is pretty much a solved problem, and has been for years. You can't do what you want, because the software doesn't exist outside of individual researchers' equipment.
There are HUDs of various resolutions that can put SVGA, XGA and higher into unobtrusive glasses (or perhaps into safety glasses, given your accident). There's plenty of hardware of every possible form factor to provide processing power and you can run x86 and Windows, or ARM and Linux and use whatever desktop software you're used to.
The issue is that all of our desktop (and even iPhone) hardware and software both is designed to be the focus of our attention. Even walking, you'll end up like people who are texting while driving. You can't do both at the same time, neither safely nor productively.
I got rid of all of my hardware because I came to believe the only way to safely and productively do something like that is without traditional interaction at all. You want a system like Steve Mann's, where data is projected onto the environment: http://www.flickr.com/photos/caseorganic/4521834460/
Longer form information needs to be able to be read to you, and you need to be able to slow down, speed up and repeat that information through the noise of the real world as the real world distracts you: http://hirevito.com/oldportfolio/smartdevice/
You want to be able to respond and act with simple gestures as to not draw attention to yourself, and to dictate longer form information out loud (so long as you don't mind being that rude guy yelling into his Bluetooth headset).
You need all new software to support these paradigms, because your UI is rendered not onto windows and boxes in an opaque, bright display taking up your field of vision, but onto the side of a building, and then another one, and then another one, advancing down the street as you continue to walk, a line or two at any given time.
The hardware to process all of this is out there; the iPhone 3GS can handle augmented reality just fine. But every task you want to accomplish needs new software.
You would probably be better off taking a cab home.