I am about to break my brain, I am trying to write to a database via AJAX and my server script is generating an error, I get part of the error statement back in my response string, but not enough to be helpful. Can anyone help me?

Log your errors somewhere, then review the log.

Using FireFox 2.0 and the FireBug plugin makes my life like a billion times easier with trying to write and test Ajax and client side stuff.
If your not using that, youre really missing out.

Also, Visual Studio 2008 has a very nice JavaScript debugger that allows you to step into code ALA Visual Studio Debuger.

I think the Web Developer Express 2008 has it as well, and thats a free download for you broke mofos.