I no longer have the disc that came with this

i no longer have the disc that came with this thing, which works perfectly & i love it, but i recently had my computer cleaned up and now i cant transfer photos!! it is the multimedia player mp3 kind.kinda square shaped, about 2 x 3 inches, black. like i said, i have no other problems with this device, maybe i need a new download thing, or something. i am a little "computer stupid", as you can plainly see, i just want to be able to put more pictures on there. thank you, i hope to hear from you soon !!