Issues with COM ports and USB->Serial plug

[Jaybone]

So I'm trying to get my laptop and my PLC to talk to each other (DL05 plc & directsoft 5.2), but on the link wizard it only gives me the options of COM 1, COM 2, ethernet and modem.  My device manager has named my USB->Serial plug COM 8.  How do I get around this issue?  I've seen it connected with a converter plug before- it would be nice if they just put a USB connector on the PLC, modernized a bit.  Any help would be great.

[Controls Guy]

In the DSLaunch tree view, click on DS500.ini.  It should be near the bottom of the Utilities section.

Find the following section:

[devasync.dll]
;Dump=1
COM1Enable=1
COM2Enable=1
COM3Enable=0
COM4Enable=0
ModemEnable=1
COM8Enable=0
COM7Enable=0
COM6Enable=0
COM5Enable=0
COM2=4,3,2,0,0
COM1=4,3,3,0,0

Change the highlighted line to COM8Enable=1
.
Close DSLaunch and run it again.  The link editor will now offer COM8 as one of the selections.