Many thanks for the pointers gentlemen.
However,the install is way too complicated and having seen the various disclaimers in RED TYPE on the website i have decided to call a halt on the install which is a shame really because the Rockbox software appears to be superior to the standard I-River package, also i was mildly put off by the attitude of a developer who seems to think that everybody will be on his 'level' straight away,not everybody is a software developer matey!!!

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Well it's a case of 'if it ain't broke,don't try to fix it' for me, I have a ihp 120 and 140 which both work perfectly and have done so for many years,why take the risk of losing it all.
Kind Regards