Okay. It's the larger serial port that it's going to. The one with the SCSI icon above/below it (I forget which).

So it would be best to see if I can find another modem? I had a feeling it would go down to that. School will be open on Monday and I'll see if there's any other old retired modems. If I can't find any there then I'll wait for when I get some money coming in and buy one off of ebay. Thanks for the advice