A:AnswerIt will work with Windows 7. Easy plug and play connection. Have not had the printer long enough to replace any cartridges but so far it has excellent performance with our windows 7 system.
A:AnswerYou can scan several photo's at once and save the scanned images to your computer. Then use your photo editing software to crop them into separate images.
A:AnswerMy best guess is NO. I have 3 wireless printer at home; but they are different makers. However, each printer should have different ID even from same company. To me its a given coming from an engineering background. Don't see a company that would say I only want to sell you one printer.
A:AnswerIt should not have a problem with that size, but only one at a time from the rear tray. you might have to stack them in the main tray and see how that works.
A:AnswerIt prints #10 legal size envelopes I think it can print up to 10 at a time. You just load the paper into the bottom or back and adjust it the setting on the screen (it will ask you once you put the paper drawer back in.)