Windows also has the Snipping tool. That also gets the job done.
go to accessories and find the snipping tool, from there its pretty much self explaining
also if u want to save pics from the wii,
1. save pic to wii, not sd card
2. run game without codes
3. go to album and transmit pics from wii to sd card
4. use bin2jpg to transform these specially formated pics from ur sd card into jpg files(the pics will be in a folder called al inside the pf folder)