How to open a Holux GR-213 case?

[klou]

Hi,

I bought a Holux GR-213 GPS receiver with a PS2 connection. I want to shorten the cable and I need to change the wiring of the PS2 port because it is different from the one of my PDA mount (where the GPS will be plugged in). I've already cut the cable and tried to solder it together (shorter cable) but it's a pain to solder those tiny wires together so I'm looking for another alternative. I'd like to open the case and replace the whole cable with a shorter PS2 cable so that the soldering is done inside the case rather than along the cable itself. But there is no screw to open the case. Is there a trick to open it without breaking anything??

Thanks

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