If that Poliroid at Walmart is the Pol. 640 model,i have one and its a great camera,hi resolutin pics are good as the pics from my Minolta,however
be very careful of the port on the camera where the serial cable plugs into.Inside on the circut board this port is soldered on and is very fragile,
mine was dropped on the cabe end while it was plugged into camera,only dropped from my hand to the chair i was sitting on,landed on the cable side and that soldered on port broke off the board inside.Now i have to use a reader that you insert the memory card into,it connects via a USB cable,you can also get them in a pass thru parallel port type,meaning it connects between your computer port and your printer cable there by sharing the same port.Or you can buy the flash path floopy adapter,they work well but i hear they are hard on batteries,as are the cameras if you use the LCD display a lot.Otherwise they are decent.One thing to be aware of with Walmart,if you buy a digital there and it breaks,they wont refund or replace it,they take it and send it back to Poliroid and is shipped back to you,i did this once,at no cost to me at all under warranty,so that isnt really to bad
a deal.But if i had the money to do it,i would buy (walmart has them) a digital that instead of a memory card,it uses 1.44 computer floppy disks,makes life a whole lot easier and cheaper for storage.you can take pics till your batteries die or you run out of floppys.then just bring it home and transfer them
by drag and drop if you want to your computer,you dont even need special software.Win Explorer will do it.Its just like copying a file from disk to computer.Plus these camera have better features like zoom.But run about 4 to 500 $$