I forgot to say this earlier, but you'll also need to download the PetitModem program for PC too (just search "PetitModem", it'll probably come up as one of the first results). I'd also recommend buying a splitter for smoother transferring. You should get this one (https://www.amazon.com/gp/aw/d/B006T65CXE/ref=psdcmw_2267280011_t1_B00IX17RZY), as it's the most recommended splitter for PetitModem.
1そうだね 未プレイ