Post params don't show up on server side

Hi,

I currently switched over from prototype to YUI and have some problems
using the connection manager.

I'm using the POST method with some parameters, but when my async
connection is sent, the server side only receives some parameters in
the URL, but not the ones that I pass into the 4th argument of
asyncRequest. (I'm using Apache ASP on the server).

Another related thing I noticed is that the Params tab don't show up
for these requests either, and the "Post" tab shows the parameters as
a single long string, rather than a key-value column like it did when
I was using prototype.js. This was the way when I was looking at the
official YUI Post method example as well.

Any ideas what I'm doing wrong?

James