BTW: I didn't have a male 25pin-male to 9pin-male so I had to plug it into the paralell (printer) plug on the back of the pc.
This is your problem. ttySx are used for serial communications (equivalent to com1 thru com4 on DOS/Windows) and the parallel port is lpx where x is a number 0 to however many you have. In other words, you need the proper connector to hook it to your serial. It shouldn't matter what the pin out is. If you don't have a 25 pin, you should get a cable with 9 pin serial. 25 pin serial and 9 pin serial both work, you just have to have a modem cable to hook to one or the other. (Though I'm not sure how you managed to connect it to your parallel port) Hope this helps.

Happy Hacking