>Hi!
>
>Say I've got a list of calls I want to make in a day.
>
>Say I have ten calls, I want to work out every combination of order of visits.
>
>Has anyone any ideas on how I would achieve this?
>
>Any help extremley appreciated

Do you want to generate all permutations of N values, except repeating values? (i.e. 12345, 54321, but not 12134).