Is this camera compatible with an HP photosmart printer? sure. just upload the picture to your pc first and you can print it with any printer you want. The Canon A550 _IS_ "PictBridge" compatible. I don't know about your HP Printer, but look for the PictBridge logo right on the printer or in your owner's manual. If it's there, you won't even need a computer to print your pictures.
Of course, if you do want to use the PC to do it, you will have a lot more control over the final outcome and really ANY camera would work with your printer that way. | 