Re: Hard drive - you could try eBay......
You could also post on the Synthzone 'Buy and Sell' section :
http://www.synthzone.com/cgi-bin/forumdisplay.cgi?action=topics&forum=Wanted+To+Buy+|AMP|+Sell&number=29&DaysPrune=100&LastLogin=

For KN5000 styles, have a look at Gunnar's website : http://home.c2i.net/gjgotaas/
On the left of the home page, select KN5000 in the 'Select a KN'
Have Fun

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Willum
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Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)