Isabelle,
I think you mean...
For i = 2 To 502 Step 100
...to create 6 new files as follows:
gubbins1.xls: 2-101
gubbins2.xls: 102-201
gubbins3.xls: 202-301
gubbins4.xls: 302-401
gubbins5.xls: 402-501
gubbins6.xls: 502-601
--
Garry
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