Thanks Richard,
I don't need to "do" anything with the value, "all" I need is to display it

ValueH = 12
ValueL = 45234
GOSUB Print32BitValue

Result: 831666

I tried your HourMeter aproach and it works fine with example above. Cool!
Unfortunately it falls appart when the high word is >1000, ie when the Result of DIV32 is >65535.
Without really thinking I changed DIV32 to 10000 and massaged the display code but obviously it only pushes the problem to when the high word is >10000.

I feel daft...