My local compusa has the entire Canon Pixma line of printers on display. I'd like to take a couple of my own pics and my own photo paper and print identical pictures on all of them to see how they compare. This'd be simple if they had card slots like most photo printers, but they don't. They do have a usb port up front for a camera, but mine (kodak DX7630) doesn't do pictbridge (at least, I couldn't get it to print directly from the camera on my i860 at home).

Anyone know another way to do this? Any way to get these to print from a thumbdrive or something like that?

Or, does anyone know that my camera SHOULD do this and I was just doing something wrong at home? (the camera and lights on the printer would flash when I tried, but nothing would print)

Do they have ink in their printers and allow people to test them?

I'm not saying they don't, I have never looked at printers at CompUSA. I would think they wouldn't though because that would cost them ink. But then again it could make them a sale...

At least most do, at least at my store. Soem of the printers have boxes hooked up to do preset sample pages - but since those are highly optimized by the mfg, I don't put much stock in them. I've also seen samples printed at the store on plain paper by employees.

For all the models I looked at of Pixma they have:

Standard Interfaces: USB and Direct Print Port (cables not included)

see here for proof

This is from a diff model of canon printers, but mentions the direct print port...so should be the same for pixma

That's all I got. I know you already knew most of that, but maybe someone else can help you using the information I got. I don't mess with dig cameras or printers much, so I have no idea.

Some printers today are set up for wireless?
I would also look for that

nope, no wireless on these (well, there is a version of the ip4000 w/ wireless, but not worth the money for me)

I would think if you went to CompUSA during a non busy time and got ahold of a good salesperson they would help you accomplish you're goal. Finding the salesperson to help you is probably the hardest part.

Actually...I just had a thought. Compusa sells dig cams too. Take your mem card in and do what alan says, maybe put your mem card in a dig cam that will hookup to the printers.