Using ringtone maker, an iPhone 4 running IOS 5.1, a windows XP computer, and Jaws 7.0

Hi all, I have an iPhone 4 running the latest version of IOS. I use the free ringtone maker app made by Zentertain Ltd. My only access to iTunes at the moment is through a windows xp computer that if I remember correctly the version of Jaws installed is 7.0. The app works well and I am able to make my tones with no problem. But when I go to put them on the desktop so I can transfer them into iTunes and then on to my phone, I click the "save to" button and an iTunes dialogue appears that jaws doesn't read. My only two choices are "Ok and cancel" When I press either of them nothing happens and jaws gives me no choices as to where I can save the files, but if I try to resave one it tells me that there has already been a file with that name saved to that particular location. I looked for them on the desk top and wasn't able to find them. I tried to search for them but was still unable to find them! Does anyone else use this app and jaws and knows how to do this? I want some ringtones for calling, texting, and some other things as well, and I really don't want to pay $1.29 on iTunes for 30 seconds of a song. If anyone can help it would be very much appreciated!! Thanks so much, Holly