Thanks for these two replies. Regarding the first recommendation (CG-Feedread), I've downloaded it and started fiddling with it, but it's very poorly documented and I don't think it allows me to apply style settings to entries. ...Unless I'm missing something.
Regarding the second recommendation ("just add the Loop to your pre-existing webpage) ... I don't see how I can use the Loop (which is a function defined by WordPress's software) on a page that is outside WordPress's purview.
I welcome further clarification.
...IN FACT, if somebody will hold my hand through an implementation on this, I'll happily send you $50.00 (by PayPal or by check) as soon as it's implemented. (I'm willing to pay cash because this is a commercial project and I have an urgent deadline. I had to ditch MoveableType at the last minute and so my learning curve is killing me.)
My e-mail address is webstuff at zader dot com. I'm going to go get a little sleep and then hopefully wrap this up in the morning.