How many pics? If it's not a lot you can always just attach them in an email or by text and send to yourself, then just save to camera roll. Or, if you have Facebook, you can PM them to yourself and save the image to your phone from the PM. It's just a quick work around that I do sometimes.
There's is an app called Image Capture in Apple OS to do this. As for putting photos in iPhone, just create a folder in your PC then put the photos you want in that folder and point iTunes to add those photos in your device.