If you can't work under people, that usually means you can't work with people... and it's going to be intensely hard to start a company without a sense of teamwork.
Additionally, while I would say that the economy is definitely NOT "going down the tubes," it is going to be extremely difficult for you to nail funding from corporations, vc's. If you have a rich relative, on the other hand, but you would still owe them a stake in the company and they probably wouldn't be able to offer any good business advice. If you're IT, you're probably thinking about a dot com. That's not going to be a smart idea until a dot com turns profitable and that will probably be Amazon in 2003 or something.
But most importantly, IT people can ALWAYS get jobs. Maybe not at some sexy dotcom, if you have the skills and the grades, you can most likely land a job in IT. Just don't be too focused on going into a tech company as layoffs are expected to continue for a couple months and they won't be hiring all too many people when the spring rolls around.
Hope this helps..