What do you mean by "web developing"?
While people with nothing more than a bit of HTML could make good money in the ".com" goldrush, it's very rare now. Web applications have moved on, although there's still money around if you've got the right skills. I'm no real expert (I mainly work architecting this stuff) but from where I work two options spring to mind:
There's some demand for people with Enterprise Java skills, so you could look at something like Sun's "Certified Java Programmer" and "Certified Web Component Developer" exams (the second is the one you want, the first is a pre-requisite - i've done both, they're not too hard but getting there from a standing start will be difficult). JSPs and Servlets are popular, but not many people can write them well (plenty can bodge them!). It might also be worth looking at the Microsoft .NET equivalents, it's a bit slower to market but you can bet they'll catch up like they always do.
The alternative might be to get skilled up in something more graphical like Flash (Certified Macromedia Flash MX Developer maybe). I know much less about this and the demand for skills, but at work it always seems to be hard to find someone when you need them - although that may be where I work
You'll notice that I'm suggesting certification in both cases. It's a bit of a pain to get, but these days you're really going to struggle to get a job doing any of this stuff without experience or demonstrable skills. Certification at least shows that you've got the basic skills to do the job.
HTH - feel free to PM if you would like to discuss further.