Why can't I setup my HP Photosmart C4580 Printer with my Macbook?

Question

   Okay, first of all, I've got to say that this has to be one of the most troublesome pieces of computer hardware that I've ever had the misfortune of running across. The only thing that keeps me from going all "Office Space" on it, (as another frustrated user put it) is that I've had the printer since I got my Macbook in late 2008, and there have been huge stretches of time when it has worked more or less perfectly. However, each time I update my OS, or try to add the printer to a new computer, all **** breaks loose. This latest time has really taken the cake- as I've been messing with it consistently for several weeks and have not been able to use it at all.
   I guess it began when I upgraded to OS X Snow Leopard around April. Prior to this the wi-fi printing had worked fine, but after this upgrade for some reason I could only print with the USB connected. Then, about a month ago I upgraded to OS X Lion, and I'm still unable to get the wi-fi printing to work.
   The point I'm at now, is that I've downloaded what I believe to be the appropriate HP setup utility package, and went through that all the way through where it sets up the wireless functionality of the printer and it says to go to 'Print & Fax' in System Preferences and add the printer. So I do that, and I get to this point:
Setting up 'Photosmart C4500 series
[F559E3]...'
Software for this printer is available from Apple.
Would you like to download and install it?
... where I obivously click "Download and Install". At this point, I get a dialog that says "Finding software" for several minutes, and then says:
Setting up 'Photosmart C4500 series
[F559E3]...'
The software for this printer is currently unavailable.
Please contact the printer's manufacturer for the
latest software.
... at this point the only option is "Cancel", and when I click that, I'm left with no printers in my list of printers. Likewise, if I don't click "Download and Install on the previous screen, it cancels the setup.
This leads me to believe that it may actually be an issue with Apple instead of HP at this point, but I'm not sure. Likewise, I've tried other options such as setting up the printer by it's IP address and by something called an HP Jetdirect - Socket, but those methods were unfruitful.
I feel like I should note that, when I go to "Add Printer", I'm presented with a list of both the USB connected version of my printer, and the "Bonjour Multifunction" version (wi-fi). So it seems that the computer is having no trouble at least detecting the printer, which has been a problem for me in the past.
Any help would be very much appreciated.

Answer 1

Despite HP's statement that 10.7 is supported for the Photosmart C4580, there are no drivers for this.  I spoke to their Support Line and basically you need to buy a new printer.  Wow!  Wish I had known that before I upgraded to Lion. 
HP does have a Trade-In and Trade-Up program.  Sounds like the newer model printers will also handle the AirPrint for your iPhone and iPads.