Hello Chara:
Basically you have two options: get a pre-paid credit card from most banks from which you can purchase Partition Table Doctor (my reccomedation)'
or you could roll the dice with this free version (i dont know if it will work or not and if it doesnt how that failure will impact your recovery ???)
http://www.pcinspector.de/file_recovery/UK/welcome.htm
post your progress or further questions >>> goodluck