I just upgraded my blackjack i607 to windows mobile 6 and I have mp3s that I could use as ringtones and now I can't can anyone help me figure out how to get my ringtones back

If those ringtones were saved to your phone, then they were lost in the upgrade because it is necessary to flash the phone during upgrade, therefore erasing what you had saved on the phone. If the ringtones are on a memory card then take it out blow the card and put it back in. Look through a few folders too, sometimes we make a duplicate folder we already had without realizing it. Hope this helps and good luck!