STiX
Intermediate OT User
Follow the instructions.
You can now transfer files hidden inside picture files.
Previously, this method was used by pedophiles to distribute kiddy pRon - but maybe you could put it to better use. Follow the instructions and launch the batchfile, remember it's currently saved as a text document so you can see it won't destroy your PC contents (if you remotely understand it that is).
Seeing as this isn't an OpenTibia related download, I felt it was better to put it here. Still not perfect though, so feel free to move it.