I too have got the Mobile Action 660 Irda.
But the drivers which they provide in the CD are of
MA 620. So windows can't install the hardware. I had written an email to Mobile Action. They replied saying that MA660 drivers are available for download from their website. But, to my disappointment, I found that those too were for MA620.

Those guys didn't reply anymore, nor their website updated. Now the device is lying with me useless.

I did a thorough googling for the drivers. They all gave the drivers named MA660, but when I opened up the zipped file, it would be the same MA620.
Check the bottom of the device. Do you find their written
MA 660?
@hyde Do you surely have the drivers for MA660? I too have given you a message. Thanks a lot....