How to wire up bare wires GPS to PC?

Windway

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I am sure someone will know this but I am rather puzzled by it all!
The GPS has an NMEA data cable, bare wires at the business end and I want to connect the GPS signal to my DSC VHF, AIS Radar and my PC upon which sit my lovely electronic charts. All of these devices appear to be NMEA 0183 and I have read about senders and receivers.
Presumably the GPS out or sender from the GPS goes into the first receiver and then out again to the next and so on, but what do you do at the PC and where in the chain should this be? My PC has RS232 blue female socket and USB 1.0
I might add an AIS engine as well to display the AIS targets on the PC chartplotter, but rather like my old AIS Radar as a standby as it has its own screen in case one day the PC refuses to boot up.
Could someone who understands all this please give me the heads up, or if it has already been discussed at length, could some kind soul please send me the URL?
 
Some info which may help.
Bare wires out of your talker (gps) can be split and not daisy chained like you suggest. I have 2 listeners on mine, a DSC radio and laptop. There is a maximum amount of listeners you can have but I not sure how many, I think it's 3 or 4. My bare wires are split in a choc block connector and go into my laptop via a 9 pin D connector (serial port). More modern laptops don't have this input and you might need a serial to usb adapter. The input to my DSC is via the 2 wire that are specified in the user manual.
This lnk gives you the connections on a 9 pin serial plug.
http://www.maptech.com/support/doc.cfm?plid=24&docid=76
 
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