Sony Ericsson S710a

Does anyone here know how to view pics on this phone after transfering them over from PC to the memory stick?? I have taken many pics with a digital camera then tried to put them in the folder that has all my s710a pics but they dont appear when i view them from my phone. When i transfer over MP3s and MP4s etc to the memory stick those work great but I cant view the pics for some reason. 🙄