help With 256 bit BLOWFISH block cipher ??????

ok i'v searched the internet and cant find the answer to my question so thought id ask here...
basically i used an application on my nokia phone that uses "256 bit BLOWFISH block cipher encryption" to keep files private.
cut a long story short the dam things stopped working and im left with a load of jpg's that i really want but cant decrypt them.
iv noticed that once i encrypted a picture, 2 files were created. im thinking that * is a key or something to decrypt the other * so i can get the picture back.
is there an application i can use to decrypt them using this other file that was created or have a lost my photo's... pls help.
thanks in advance, mat

What type of files are they.
Before they were encrypted.